วันอังคารที่ 14 มิถุนายน พ.ศ. 2554
วันอังคารที่ 17 สิงหาคม พ.ศ. 2553
Everything You Always Wanted to Know About Wireless Hidden Cameras and Maybe More!
You are thinking about purchasing a wireless hidden camera but, like many people, are afraid of electronic products. You keep reading about words like "lux" and "camera resolution" and "line of sight" -- do I really have to know what these mean? And, isn't the wireless hidden camera hard to install?
The answer is NO and I'm going to tell you how easy it is to install and use your wireless hidden camera. I will also explain some of the "difficult" terms in plain, understandable English so you won't be intimidated any more.
The best thing about a wireless hidden camera is just that -- it's WIRELESS! You won't have to run any wires through your walls or under your rug.
These wireless cameras are called "hidden" because they are built into an existing everyday object that you see in your home or office. Most of these objects are functioning electrical appliances, e.g. clock radios, cordless phones, and even computer speakers.
Each object contains a wireless camera. The camera will function as long as the object is plugged into the wall outlet. For example, even when you turn your radio off, the camera is still working! These objects look natural when plugged into the wall, so your camera remains hidden and unsuspected.
Don't forget -- the object in which your camera is hidden is usually portable, e.g. clock radio. So even if you disconnect the plug from the wall -- perhaps to move the object -- you can still use your wireless camera with batteries. The batteries work for about 4-8 hours, so it's best that you have another set handy or use a battery charger for a fresh supply.
You want to purchase a wireless surveillance camera system that is "Plug and Play." This means just what it says -- plug it in and begin using it! Your wireless hidden camera comes with 2 main components: 1) a camera and a transmitter connected inside an everyday object; and 2) a receiver which is attached to your VCR or TV. That's all there is to it -- you're now ready to record!
Record what? There are unlimited uses for your wireless hidden camera.
How about as a hidden nanny camera -- you can watch your children while they are being cared for by their nanny or baby sitter. What about your mother or father who is getting up in years and needs special care. Wouldn't it be great to know who's on your property all the time or even at the door? And how about your children -- you can keep an eye on your tots with your hidden nanny camera to make sure they don't leave the house or property. And, now with your small security camera, you will know the real time your teens return home at night!
By using wireless hidden cameras in the workplace, you will always be aware of what's going on in your store, office and warehouse. Just set up a hidden camera to view your cash register, entrance and exit doors, loading dock, or just about anywhere.
All this and much more can be viewed from your VCR tape or live on your TV. And, with special software, you can watch what's going on in your home or business on your computer screen, even when you're away.
Should you choose a Black and White (B/W) or Color Camera? That is a personal choice that you should make. A Black and White camera does better as a low light wireless camera than a color camera because it has a lower lux. Color Cameras, however, would be more helpful to the police in identifying the burglar, shoplifter, assailant, etc. by giving a better description -- for example, "the man with red hair in the green and yellow shirt."
Finally, I promised to explain some technical camera terms. Here are some of the general questions you might ask about your wireless hidden camera:
• What is a Wireless Camera? A wireless camera consists of a camera with a transmitter attached to it and a receiver which connects to a VCR or a TV.
• What is "Plug and Play"? Plug and Play is the easy way to install your wireless surveillance camera system. Just connect the power supply (either AC for wall power or the battery pack) to your camera. Place the object containing the camera to show what you want to review. Connect the receiver to your TV or VCR using the red and yellow RCA cable from the receiver. You are now set up.
• What is a Transmitter? A transmitter is a device that converts video signals into radio frequency signals and transmits them as radio waves.
• What is a Receiver? A receiver is an electronic device that receives radio signals from a transmitter and decodes the signal for use as pictures on your VCR or TV.
• What is "Lux"? Lux is a method of measuring a camera's sensitivity to light, i.e. it is the amount of light the camera needs to provide an image. The lower the number, the less light the camera needs to reproduce a clear image. A Black and White camera usually has a lower lux than a color camera. It will hold an image longer than a color camera. For example, a B/W camera with a .05 lux will be better in low light than a color camera with a .5 lux.
• What is the meaning of "camera resolution" for security cameras? Camera resolution is a measure of the clearness of a security camera. It's determined by the number of horizontal video lines that the camera must have to reproduce the correct image. The higher the resolution number, the sharper the image.
• What is a Monitor? A monitor is what you use to view your camera image. The monitor could be a TV, CCTV (closed circuit TV) or even your computer screen.
• What is "Line of Sight"? Line of Sight means that the video signal travels from the transmitter in your camera to a dedicated receiver (e.g. VCR or TV) placed a certain distance away with no obstructions or interference between the two. The signal can go through walls and floors. Low Power Cameras usually have a line of sight of 700 feet. However, you can upgrade to a High Power Camera which has a line of sight of 3,500 feet.
So there you have it -- you don't have to be a camera buff to install or operate your wireless hidden camera. Just plug and play!
Don't Become the Next Crime Statistic! A wireless hidden camera will show you
what's REALLY happening in your home or business.
For more information on hidden cameras, please click on this link:
http://www.feelsafeandsecure.com/wireless_hidden_cameas.html
Feel Safe and Secure is a seller of home security products, self defense products and wireless hidden cameras. To view these amazing products, please visit our website: http://www.feelsafeandsecure.com and Don't Be the Next Victim!
The answer is NO and I'm going to tell you how easy it is to install and use your wireless hidden camera. I will also explain some of the "difficult" terms in plain, understandable English so you won't be intimidated any more.
The best thing about a wireless hidden camera is just that -- it's WIRELESS! You won't have to run any wires through your walls or under your rug.
These wireless cameras are called "hidden" because they are built into an existing everyday object that you see in your home or office. Most of these objects are functioning electrical appliances, e.g. clock radios, cordless phones, and even computer speakers.
Each object contains a wireless camera. The camera will function as long as the object is plugged into the wall outlet. For example, even when you turn your radio off, the camera is still working! These objects look natural when plugged into the wall, so your camera remains hidden and unsuspected.
Don't forget -- the object in which your camera is hidden is usually portable, e.g. clock radio. So even if you disconnect the plug from the wall -- perhaps to move the object -- you can still use your wireless camera with batteries. The batteries work for about 4-8 hours, so it's best that you have another set handy or use a battery charger for a fresh supply.
You want to purchase a wireless surveillance camera system that is "Plug and Play." This means just what it says -- plug it in and begin using it! Your wireless hidden camera comes with 2 main components: 1) a camera and a transmitter connected inside an everyday object; and 2) a receiver which is attached to your VCR or TV. That's all there is to it -- you're now ready to record!
Record what? There are unlimited uses for your wireless hidden camera.
How about as a hidden nanny camera -- you can watch your children while they are being cared for by their nanny or baby sitter. What about your mother or father who is getting up in years and needs special care. Wouldn't it be great to know who's on your property all the time or even at the door? And how about your children -- you can keep an eye on your tots with your hidden nanny camera to make sure they don't leave the house or property. And, now with your small security camera, you will know the real time your teens return home at night!
By using wireless hidden cameras in the workplace, you will always be aware of what's going on in your store, office and warehouse. Just set up a hidden camera to view your cash register, entrance and exit doors, loading dock, or just about anywhere.
All this and much more can be viewed from your VCR tape or live on your TV. And, with special software, you can watch what's going on in your home or business on your computer screen, even when you're away.
Should you choose a Black and White (B/W) or Color Camera? That is a personal choice that you should make. A Black and White camera does better as a low light wireless camera than a color camera because it has a lower lux. Color Cameras, however, would be more helpful to the police in identifying the burglar, shoplifter, assailant, etc. by giving a better description -- for example, "the man with red hair in the green and yellow shirt."
Finally, I promised to explain some technical camera terms. Here are some of the general questions you might ask about your wireless hidden camera:
• What is a Wireless Camera? A wireless camera consists of a camera with a transmitter attached to it and a receiver which connects to a VCR or a TV.
• What is "Plug and Play"? Plug and Play is the easy way to install your wireless surveillance camera system. Just connect the power supply (either AC for wall power or the battery pack) to your camera. Place the object containing the camera to show what you want to review. Connect the receiver to your TV or VCR using the red and yellow RCA cable from the receiver. You are now set up.
• What is a Transmitter? A transmitter is a device that converts video signals into radio frequency signals and transmits them as radio waves.
• What is a Receiver? A receiver is an electronic device that receives radio signals from a transmitter and decodes the signal for use as pictures on your VCR or TV.
• What is "Lux"? Lux is a method of measuring a camera's sensitivity to light, i.e. it is the amount of light the camera needs to provide an image. The lower the number, the less light the camera needs to reproduce a clear image. A Black and White camera usually has a lower lux than a color camera. It will hold an image longer than a color camera. For example, a B/W camera with a .05 lux will be better in low light than a color camera with a .5 lux.
• What is the meaning of "camera resolution" for security cameras? Camera resolution is a measure of the clearness of a security camera. It's determined by the number of horizontal video lines that the camera must have to reproduce the correct image. The higher the resolution number, the sharper the image.
• What is a Monitor? A monitor is what you use to view your camera image. The monitor could be a TV, CCTV (closed circuit TV) or even your computer screen.
• What is "Line of Sight"? Line of Sight means that the video signal travels from the transmitter in your camera to a dedicated receiver (e.g. VCR or TV) placed a certain distance away with no obstructions or interference between the two. The signal can go through walls and floors. Low Power Cameras usually have a line of sight of 700 feet. However, you can upgrade to a High Power Camera which has a line of sight of 3,500 feet.
So there you have it -- you don't have to be a camera buff to install or operate your wireless hidden camera. Just plug and play!
Don't Become the Next Crime Statistic! A wireless hidden camera will show you
what's REALLY happening in your home or business.
For more information on hidden cameras, please click on this link:
http://www.feelsafeandsecure.com/wireless_hidden_cameas.html
Feel Safe and Secure is a seller of home security products, self defense products and wireless hidden cameras. To view these amazing products, please visit our website: http://www.feelsafeandsecure.com and Don't Be the Next Victim!
Top 20 Questions to Consider When Buying a Digital Camera
My top 20 key questions to ask yourself when buying a digital camera.
1. How many "megapixels" /resolution?
Once and for all, at least to me, you have to get the highest resolution your money can buy at the time you buy. Period.
2. Who made the lens?
Most cameras will give you an idea where the lens was made just by looking at the front of the lens. Know if the lens of your camera came from a reputable company like Leica, Zeiss, Canon, Etc... Lens quality is one of the most important factors you should consider especially if you're going to use it for commercial, technical or scientific purposes.
3. Will I need interchangeable lenses? How many are available for my specific camera in mind?
Having the option of interchangeable lenses gives you the freedom to experiment with different kinds of focal lengths. Although some P&S (point and shoot) cameras can rival DSLR's with a generous zoom range for a non interchangeable lens system.
Also note the number of lenses available for use with your specific camera because of flexibility reasons. You can practically cover the entire "zoom range" with interchangeable lenses versus modest zoom ranges on non interchangeable lens systems or P&S cameras.
4. Does it have a zoom capability? What's the range?
Almost all applications that I listed above will need some form of zooming in (telephoto) or out (wide angle), especially if you don't have the space to move around the object you are shooting.
For Landscape shots, wide angle shots are very common and appealing while zooming in on the details serves as a break and complements the wide angle shots.
For weddings and events, you need a zoom because there will be times where you are limited by the shooting space and you will have a difficult time moving around. Its a good thing to know that you can do all sorts of framing without even moving from your position.
A nice zoom will give you the efficiency and versatility in your photography, so my suggestion is to go for the longest range you can get (usually from a 7X to a 10X for Point and Shoots).
Also note the speed of zooming in or out as this will be a factor if you're shooting events like weddings. You will fail to capture that "decisive moment" on a mediocre zoom speed.
5. Does it have the provision to capture raw images?
Many photographers will say you'll need this digital camera feature if you want to have big prints from your pictures. Although this is correct, the main reason why you will want this is because of the benefit it will give you...pure total control of your pictures... from exposure, color, metadata, hdr and a lot more.
6. Can I attach an external flash?
Having an external flash capability will give you the power and creative freedom to light your subjects any which way you like.
You can connect your digital camera to all sorts of lighting equipment thus giving you more options and versatility. This comes in the form of a hotshoe or a PC-Sync socket.
If your digital camera doesn't have this feature, there is still hope because accessories called flash slaves are being sold by third party companies in different flavors that will also do the same job more or less.
7. Does it have a tripod socket?
Some of the most beautiful landscape pictures that I've seen are undoubtedly made with a tripod, so this is a must have if you are planning to do this kind of photography.
The "available light shots" in a wedding, still life and product shots, studio and fine art shots ... all need a tripod for successful execution... so guess what happens if you don't have a tripod socket?... You cannot effectively use a tripod!
8. Does it have automatic and manual focusing?
It will not be evident at first why you'll need this especially if you're just starting out in photography. But if you're like me... A total control freak when it comes to cameras... and you really want to express your creative side, this is definitely a must have.
9. Can you attach filters to it? and what filter size?
Creative expression through special effects is just one of the many reasons that makes photography fun and interesting, and experimenting with filters is one creative pursuit you should try with your photography especially if you're a beginner.
Always remember to ask if the particular digital camera you are eyeing for can handle filters and ask for the filter size. (To save you from buying the right filter with the wrong filter size) Please note that most Digital SLRs should be able to to handle filters as most lenses that come with it have a filter thread built into the lens.
Most P&S (point and shoot) digital cameras normally doesn't have a filter thread built-in and might need special accessories to accomplish this so you should check to know for sure.
Again, there are many third party accessories that you could buy to adapt filters to your P&S digital cameras that don't have this provisions. I'll discuss all about this in a future post so watch for it. (Or subscribe to my announcement list (feed via email) so you'll know when it's up.
10. Can I upgrade the firmware?
The good thing about some digital camera manufacturers is that they keep on improving their digital cameras even after they sold it to you... this comes in the form of a firmware upgrade.
Usually this involves an improvement on one or many features of a camera. Be sure that the digital camera you're planning to buy has an easy way of upgrading its firmware. This comes in the form of either an easy download via the manufacturer's website (find it and bookmark it now) or a FREE CDROM.
Another caveat - be sure to consider if a downgrade is also possible or available with your digital camera... Why is there a need a downgrade you ask?... Because, you may want to reinstall an earlier firmware... just in case you don't like the results from a firmware upgrade.
Occasionally there's a feature that will be removed by the upgrade that you failed to read about and you decided that you just want to keep that feature instead of a bunch of trivial upgrades from the new firmware. (Yes, I personally experienced this.)
11. Are there extra goodies or software that come with it?
Some people ignore the fact that you can save a lot of money just by doing a simple arithmetic. Did you know that you could actually get your digital camera for a lot less if you study the deals and offers on the marketplace?
If you buy a digital camera and it comes with software that you can really use... like photoshop, elements, or any other image editing software for that matter, then you already saved some money you would otherwise spend. Some dealers will throw in lots of extras... If you just simply ask.
Always try to ask for these things that you'll end up buying anyway if you don't - like camera bags, extra lenses, extra batteries, memory cards, tripod, lens cleaners etc. Trust me... you will end up buying these things if you don't ask for it on the deal. What have you got to lose? Simply ASK. Would you believe that I effectively lowered one of my camera purchase cost by as much as 30%? Ask away.
12. Is there Local Support in your area?
Finding the answer to this one will give you a great benefit in the long run. Wouldn't you sleep better at night because you feel that extra security - that in case there is something wrong with your digital camera, you can bring it in for repair at a moments notice?
Not knowing when your camera will be repaired (or if it even arrived at a distant repair facility) is one of the worst feelings a photographer can have especially if you're in the middle of a photoshoot or project.
13. What type of warranty does it have? Worldwide / Countrywide?
If you travel a lot its good to know that a countrywide or even better - a worldwide warranty can get your camera fixed wherever you are. Always bring the warranty card and glue it on your camera bag.
14. Does it have the ability to take video and audio?
I know, most DSLRs don't have this function. But some non interchangeable lens DSLRs have it. This is a very useful feature to have if you're on a project or photoshoot and want to document or record a procedure, a moment, or an idea that you would otherwise have trouble remembering or even writing. It's always a good idea to bring a P&S camera backup that have this function.
The things that you could do with audio and videoclips on a photoshoot are only limited by your imagination... interviews, documentation, funny quips, training procedures, bloopers, etc..
15. Does it have a manual white balance?
White balance is one of the most interesting aspects of digital cameras. Its fun and fascinating to work with. Having this option puts the photography fun-o-meter way way up. In future posts, I will be discussing white balance in detail so be sure to stay tuned.
16. How sensitive is it to infrared?
If you're planning to make infrared pictures or enter the exciting world of Infrared fine art photography then you'll want to know if your digital camera can do it.
TIP: There is a simple way to test how sensitive your digital camera is to infrared using a very common device - a TV remote control. For P&S, you can aim the remote control towards the lens and gauge how bright the LED from remote is. This should give you an idea how sensitive your digital camera is to infrared. For DSLRs you will need to take shots of the LED and experiment a little or you can simply research or google the particular camera model you have in mind for other people's experiences and thoughts about it.
17. How high is the ISO sensitivity? Is it manually adjustable?
ISO sensitivity is a term referring to the sensitivity of film to light. In the digital camera world, it refers to the sensitivity of the electronic sensor in your digital camera in relation to the ISO standard used for film.
The higher the ISO sensitivity of your camera the faster or better it can record a specific amount of light.
High ISO sensitivity is useful for taking better pictures in dark settings... such as inside a church or at night. The higher the ISO setting, the more details you can capture of a dark scene.
One caveat - take note of the amount of noise a particular camera exhibits at higher ISOs. Some people like it and some don't. Again, don't be afraid to ask or do research on the noise characteristics of your camera model in mind to see if this is the right choice for you.
18. How high or low can you set the shutterspeed? What are the minimum and maximum aperture settings?
Shutterspeed and aperture settings are the basic mechanisms that drive your camera and controls the amount of light that is exposed by the film or image sensor.
You use high shutterspeeds in action shots and to prevent camera shake, and you use low shutterspeeds for movement effects and bulb or long exposures. You can check for these figures on the websites that I gave you in part 1. You can see it in the technical specifications for a particular camera.
A bulb or "T" function is a nice feature to have because you can take exposures for virtually very long periods of time. Another feature to have is if your camera has a remote control to use this bulb or "T" mode. This gives you the capability to take pictures without holding your camera and adding to the "camera shake".
With the subject of apertures, a small one (small aperture opening) lets you have a wider depth of field so your shots are sharp from near to far versus a large aperture (big aperture opening) where your shots have a narrow depth of field and appear "selectively focused".
19. Does it have some form of an image stabilizer?
New cameras coming out as we speak often have this feature. Simply put, an image stabilizer is some form of a mechanism built into the lens or the camera body (depending on the manufacturer and their implementation) that basically prevents you from getting blurred pictures when taking pictures in low light or you are using a long or telephoto lens. Having this feature can mean the difference between a blurry picture (aka no picture!) to a usable one.
20. How close can it focus? Macro abilities?
The closer your camera can focus... the bigger the picture of an object you can take in relation to the image dimensions of the final photo... and the bigger the picture of the object... the more detail you can get. If you want to take pictures of small objects such as flowers and fine details then this is a must-have.
That's it. Whew.
Do you really have to go over all these questions?... Of course not, but even if you only study and ponder on half of them...and take the time... I promise you that one thing will surely happen...
You'll be...
a lot smarter!
than when you first started asking these questions... ergo you'll be in a better position to decide what digital camera to buy... Because you are now armed with the most powerful tool anybody can have
the power of information!
In any case, I hope you find as much value in these questions as many of my friends have and be able to get the camera of your dreams.
Enjoy!
1. How many "megapixels" /resolution?
Once and for all, at least to me, you have to get the highest resolution your money can buy at the time you buy. Period.
2. Who made the lens?
Most cameras will give you an idea where the lens was made just by looking at the front of the lens. Know if the lens of your camera came from a reputable company like Leica, Zeiss, Canon, Etc... Lens quality is one of the most important factors you should consider especially if you're going to use it for commercial, technical or scientific purposes.
3. Will I need interchangeable lenses? How many are available for my specific camera in mind?
Having the option of interchangeable lenses gives you the freedom to experiment with different kinds of focal lengths. Although some P&S (point and shoot) cameras can rival DSLR's with a generous zoom range for a non interchangeable lens system.
Also note the number of lenses available for use with your specific camera because of flexibility reasons. You can practically cover the entire "zoom range" with interchangeable lenses versus modest zoom ranges on non interchangeable lens systems or P&S cameras.
4. Does it have a zoom capability? What's the range?
Almost all applications that I listed above will need some form of zooming in (telephoto) or out (wide angle), especially if you don't have the space to move around the object you are shooting.
For Landscape shots, wide angle shots are very common and appealing while zooming in on the details serves as a break and complements the wide angle shots.
For weddings and events, you need a zoom because there will be times where you are limited by the shooting space and you will have a difficult time moving around. Its a good thing to know that you can do all sorts of framing without even moving from your position.
A nice zoom will give you the efficiency and versatility in your photography, so my suggestion is to go for the longest range you can get (usually from a 7X to a 10X for Point and Shoots).
Also note the speed of zooming in or out as this will be a factor if you're shooting events like weddings. You will fail to capture that "decisive moment" on a mediocre zoom speed.
5. Does it have the provision to capture raw images?
Many photographers will say you'll need this digital camera feature if you want to have big prints from your pictures. Although this is correct, the main reason why you will want this is because of the benefit it will give you...pure total control of your pictures... from exposure, color, metadata, hdr and a lot more.
6. Can I attach an external flash?
Having an external flash capability will give you the power and creative freedom to light your subjects any which way you like.
You can connect your digital camera to all sorts of lighting equipment thus giving you more options and versatility. This comes in the form of a hotshoe or a PC-Sync socket.
If your digital camera doesn't have this feature, there is still hope because accessories called flash slaves are being sold by third party companies in different flavors that will also do the same job more or less.
7. Does it have a tripod socket?
Some of the most beautiful landscape pictures that I've seen are undoubtedly made with a tripod, so this is a must have if you are planning to do this kind of photography.
The "available light shots" in a wedding, still life and product shots, studio and fine art shots ... all need a tripod for successful execution... so guess what happens if you don't have a tripod socket?... You cannot effectively use a tripod!
8. Does it have automatic and manual focusing?
It will not be evident at first why you'll need this especially if you're just starting out in photography. But if you're like me... A total control freak when it comes to cameras... and you really want to express your creative side, this is definitely a must have.
9. Can you attach filters to it? and what filter size?
Creative expression through special effects is just one of the many reasons that makes photography fun and interesting, and experimenting with filters is one creative pursuit you should try with your photography especially if you're a beginner.
Always remember to ask if the particular digital camera you are eyeing for can handle filters and ask for the filter size. (To save you from buying the right filter with the wrong filter size) Please note that most Digital SLRs should be able to to handle filters as most lenses that come with it have a filter thread built into the lens.
Most P&S (point and shoot) digital cameras normally doesn't have a filter thread built-in and might need special accessories to accomplish this so you should check to know for sure.
Again, there are many third party accessories that you could buy to adapt filters to your P&S digital cameras that don't have this provisions. I'll discuss all about this in a future post so watch for it. (Or subscribe to my announcement list (feed via email) so you'll know when it's up.
10. Can I upgrade the firmware?
The good thing about some digital camera manufacturers is that they keep on improving their digital cameras even after they sold it to you... this comes in the form of a firmware upgrade.
Usually this involves an improvement on one or many features of a camera. Be sure that the digital camera you're planning to buy has an easy way of upgrading its firmware. This comes in the form of either an easy download via the manufacturer's website (find it and bookmark it now) or a FREE CDROM.
Another caveat - be sure to consider if a downgrade is also possible or available with your digital camera... Why is there a need a downgrade you ask?... Because, you may want to reinstall an earlier firmware... just in case you don't like the results from a firmware upgrade.
Occasionally there's a feature that will be removed by the upgrade that you failed to read about and you decided that you just want to keep that feature instead of a bunch of trivial upgrades from the new firmware. (Yes, I personally experienced this.)
11. Are there extra goodies or software that come with it?
Some people ignore the fact that you can save a lot of money just by doing a simple arithmetic. Did you know that you could actually get your digital camera for a lot less if you study the deals and offers on the marketplace?
If you buy a digital camera and it comes with software that you can really use... like photoshop, elements, or any other image editing software for that matter, then you already saved some money you would otherwise spend. Some dealers will throw in lots of extras... If you just simply ask.
Always try to ask for these things that you'll end up buying anyway if you don't - like camera bags, extra lenses, extra batteries, memory cards, tripod, lens cleaners etc. Trust me... you will end up buying these things if you don't ask for it on the deal. What have you got to lose? Simply ASK. Would you believe that I effectively lowered one of my camera purchase cost by as much as 30%? Ask away.
12. Is there Local Support in your area?
Finding the answer to this one will give you a great benefit in the long run. Wouldn't you sleep better at night because you feel that extra security - that in case there is something wrong with your digital camera, you can bring it in for repair at a moments notice?
Not knowing when your camera will be repaired (or if it even arrived at a distant repair facility) is one of the worst feelings a photographer can have especially if you're in the middle of a photoshoot or project.
13. What type of warranty does it have? Worldwide / Countrywide?
If you travel a lot its good to know that a countrywide or even better - a worldwide warranty can get your camera fixed wherever you are. Always bring the warranty card and glue it on your camera bag.
14. Does it have the ability to take video and audio?
I know, most DSLRs don't have this function. But some non interchangeable lens DSLRs have it. This is a very useful feature to have if you're on a project or photoshoot and want to document or record a procedure, a moment, or an idea that you would otherwise have trouble remembering or even writing. It's always a good idea to bring a P&S camera backup that have this function.
The things that you could do with audio and videoclips on a photoshoot are only limited by your imagination... interviews, documentation, funny quips, training procedures, bloopers, etc..
15. Does it have a manual white balance?
White balance is one of the most interesting aspects of digital cameras. Its fun and fascinating to work with. Having this option puts the photography fun-o-meter way way up. In future posts, I will be discussing white balance in detail so be sure to stay tuned.
16. How sensitive is it to infrared?
If you're planning to make infrared pictures or enter the exciting world of Infrared fine art photography then you'll want to know if your digital camera can do it.
TIP: There is a simple way to test how sensitive your digital camera is to infrared using a very common device - a TV remote control. For P&S, you can aim the remote control towards the lens and gauge how bright the LED from remote is. This should give you an idea how sensitive your digital camera is to infrared. For DSLRs you will need to take shots of the LED and experiment a little or you can simply research or google the particular camera model you have in mind for other people's experiences and thoughts about it.
17. How high is the ISO sensitivity? Is it manually adjustable?
ISO sensitivity is a term referring to the sensitivity of film to light. In the digital camera world, it refers to the sensitivity of the electronic sensor in your digital camera in relation to the ISO standard used for film.
The higher the ISO sensitivity of your camera the faster or better it can record a specific amount of light.
High ISO sensitivity is useful for taking better pictures in dark settings... such as inside a church or at night. The higher the ISO setting, the more details you can capture of a dark scene.
One caveat - take note of the amount of noise a particular camera exhibits at higher ISOs. Some people like it and some don't. Again, don't be afraid to ask or do research on the noise characteristics of your camera model in mind to see if this is the right choice for you.
18. How high or low can you set the shutterspeed? What are the minimum and maximum aperture settings?
Shutterspeed and aperture settings are the basic mechanisms that drive your camera and controls the amount of light that is exposed by the film or image sensor.
You use high shutterspeeds in action shots and to prevent camera shake, and you use low shutterspeeds for movement effects and bulb or long exposures. You can check for these figures on the websites that I gave you in part 1. You can see it in the technical specifications for a particular camera.
A bulb or "T" function is a nice feature to have because you can take exposures for virtually very long periods of time. Another feature to have is if your camera has a remote control to use this bulb or "T" mode. This gives you the capability to take pictures without holding your camera and adding to the "camera shake".
With the subject of apertures, a small one (small aperture opening) lets you have a wider depth of field so your shots are sharp from near to far versus a large aperture (big aperture opening) where your shots have a narrow depth of field and appear "selectively focused".
19. Does it have some form of an image stabilizer?
New cameras coming out as we speak often have this feature. Simply put, an image stabilizer is some form of a mechanism built into the lens or the camera body (depending on the manufacturer and their implementation) that basically prevents you from getting blurred pictures when taking pictures in low light or you are using a long or telephoto lens. Having this feature can mean the difference between a blurry picture (aka no picture!) to a usable one.
20. How close can it focus? Macro abilities?
The closer your camera can focus... the bigger the picture of an object you can take in relation to the image dimensions of the final photo... and the bigger the picture of the object... the more detail you can get. If you want to take pictures of small objects such as flowers and fine details then this is a must-have.
That's it. Whew.
Do you really have to go over all these questions?... Of course not, but even if you only study and ponder on half of them...and take the time... I promise you that one thing will surely happen...
You'll be...
a lot smarter!
than when you first started asking these questions... ergo you'll be in a better position to decide what digital camera to buy... Because you are now armed with the most powerful tool anybody can have
the power of information!
In any case, I hope you find as much value in these questions as many of my friends have and be able to get the camera of your dreams.
Enjoy!
Buying a Digital Camera
Family and friends can be pretty far flung these days, so how do you keep in touch? Snail mail and phoning are good options, but it's fun to be able to share pictures. With the advent of digital cameras, it's easy to post pictures on a blog or website, or send pictures via email.
Of course, film cameras will work, as you can scan and convert pictures to digital files, but the easiest way to send pictures quickly and cheaply is to use a digital camera.
How To Find What's Best For YOU When Buying A Digital Camera
There are all kinds of digital cameras available these days, so the trick is to find the one that suits your needs and budget. If you are buying your first digital camera, the lingo and technology are a bit different than for film cameras, so before shopping take time to learn a little and figure out what you'd like to buy.
First, what kind of photographer are you? Do you like total control over the picture taking process, or would you rather just aim the camera and push the shutter button? Then it's also helpful to decide what you want to do with your pictures. Do you just want to put them online or send them via email, or do you want to be able to print them, and if so, how large do you want your prints?
If photography isn't your passion, and you just want to have pictures to share, buying a simple point-and-shoot digital camera is probably best. It has automatic settings, so all you have to do is aim the camera, press the shutter and viola! Instant picture!
However, if you prefer more control over the picture taking process, try buying a mid-range digital camera. There is a wide range in both price and features. For the more serious hobby photographer, there are "prosumer" cameras midway between point-and-shoot cameras and digital SLR cameras. They offer better lens quality and usually more features than a point-and-shoot, though those little cameras can come pretty loaded these days!
Digital SLR cameras are top of the line and more expensive. These work more like traditional cameras, having a body with detachable lens. This gives you more options with being able to change lens, but it's also much more expensive. Just one lens can cost as much as a point-and-shoot digital camera! There's also usually a steeper learning curve to figure out how to use all the options on a digital SLR camera.
However, if you're buying your first digital camera, intermediate, "prosumer" and digital SLR cameras probably aren't the best choice. All the settings and features can be a little overwhelming for the beginner, and your expensive camera may end up collecting dust somewhere. Try a low to midrange camera first and get a feel for digital cameras and what features are most important to you. Then when you're ready to move up and buy a better digital camera, you'll have a better idea of what to look for before you lay out your hard earned cash!
What To Look For When You're Ready To Buy A Digital Camera
You can buy digital cameras in all sorts of places these days, from fancy department stores to discount stores, photography/camera shops and many stores online. While you can sometimes find great deals on-line, if this is your first digital camera, go to shops and look at different cameras if at all possible. It helps to pick it up and get the feel of the camera in your hand to see if it's comfortable and the controls are easy to use, and you can check out what features it has and how they work.
But what exactly are you looking for?
A pixel makes your picture....
One of the first things to check out when buying a digital camera is the MEGAPIXELS. A pixel is a single dot in a graphics image. A megapixel is equivalent to one million pixels. A 1-megapixel camera would produce an image roughly 1200 pixels wide by 900 pixels high, a 3 megapixel would be 2048 x 1536 megapixels, and so on. Higher megapixels mean better resolution, but aren't the whole picture. The main thing to keep in mind is the more megapixels, the bigger image you can print.
Approximate Megapixels vs. Print Size
2 Megapixels prints well up to 4x6 inches
3 Megapixels prints well up to 5x7 inches
4 Megapixels prints well up to 6x8 inches
6 Megapixels prints well up to 7x10 inches
8 Megapixels prints well up to 10x14 inches
12 Megapixels prints well up to 16x24 inches
For email, websites and printing snapshots, a 3 to 5-megapixel camera is a good choice. If you want to make high quality 8x10 prints or larger, you need more megapixels. Higher megapixels also allow you to crop down to a smaller portion of the picture while still retaining sharpness in prints.
One other thing to keep in mind when considering megapixels and resolution, be sure you are getting optical resolution. This is the actual number of megapixels the camera records. Some cameras offer interpolated resolution to get bigger pictures from the same number of megapixels by using software algorithms to determine what color pixels to add, so the picture becomes bigger at the expense of clarity.
Opt for optical...
Digital cameras have two kinds of zoom, optical and digital. In this case, focus on the optical zoom. It's the one that actually uses the lens' optics to bring the subject closer. The higher the number, the further away you can "pull in" your subject. The digital zoom merely takes the original information and makes it bigger, and once again, clarity is sacrificed. Most serious photographers turn off digital zoom. Stick to optical!
For Your Viewing Pleasure...
Digital cameras commonly use an LCD screen instead of a viewfinder to focus on your subject, though some come equipped with both. Check the size of the screen when buying a digital camera to be sure you can comfortably see your subject. It's also really handy to have a flip screen that allows you to hold your camera low or high, and still be able to see what's on the screen.
Fun features...
Many digital cameras offer settings for such things as burst shooting mode, which is handy if you want to take pictures of moving subjects. The camera shoots a series of pictures without pause, then writes the files to memory. Other features allow for manually changing settings, special effects, short digital movie files, using an external flash, and much more. Look over several different cameras, decide what features you just have to have, and which are on the "nice to have but not vital" list. No one camera will do everything well.
Get the Picture...
You've got to get the pictures out of the camera to share them. Usually the files are downloaded to your computer through a USB port, so make sure your computer has one. Also, keep in mind when choosing a camera, the more megapixels, the bigger the files. You've got to store those files somewhere, so how much memory is available on your computer? Does it have a CD burner?
However, you can still buy a digital camera even if you don't have a computer. Many photo labs, even in places like Walmart or Kmart, have machines with the capability of making prints and/or photo CD's from memory cards, and will make a disk of the files, sort of like digital negatives. There's also the option of buying a photo printer with a docking station for your camera. Just plug the camera into the docking station, and bypass the need for a computer to print.
Cash After Camera
When buying your digital camera, keep some cash in reserve, because there are two more important purchases you need to make.
1. Memory - The digital camera's equivalent of film, the amount of memory determines how many pictures you can take. Different cameras use different types of memory, so the first step is to find out what your camera uses. The most popular types are: Secure Digital (SD), CompactFlash (CF), SmartMedia (SM), Memory Stick (MS), MultiMediaCard (MMC), and xD-Picture Card (xD).
Cameras are usually packaged with a small MB-sized card. A second card of 64 MB is good, but of course the more MB and the more cards, the more pictures you can take before having to download and erase the images. The different cards are NOT interchangeable, so be sure to buy the right kind for your camera!
2. Battery - There's nothing more frustrating than being in the middle of snapping pictures and the battery dies. Get extras. It's worth the expense to have a second battery charged and waiting should the one in your camera lose power. The rechargeable ones are more expensive, but the ability to use them over and over makes them worth the initial outlay of cash.
That's The Total Package!
There you have the basics for choosing a digital camera. Decide what kind of pictures you are likely to take, what size prints you want to make, how much zoom, and are there any extras you can't live without? Look for the camera that most closely matches your list in your price range, buy a bigger memory card and an extra battery set, and you're good to go!
Have fun sharing those pictures with friends and family!
Of course, film cameras will work, as you can scan and convert pictures to digital files, but the easiest way to send pictures quickly and cheaply is to use a digital camera.
How To Find What's Best For YOU When Buying A Digital Camera
There are all kinds of digital cameras available these days, so the trick is to find the one that suits your needs and budget. If you are buying your first digital camera, the lingo and technology are a bit different than for film cameras, so before shopping take time to learn a little and figure out what you'd like to buy.
First, what kind of photographer are you? Do you like total control over the picture taking process, or would you rather just aim the camera and push the shutter button? Then it's also helpful to decide what you want to do with your pictures. Do you just want to put them online or send them via email, or do you want to be able to print them, and if so, how large do you want your prints?
If photography isn't your passion, and you just want to have pictures to share, buying a simple point-and-shoot digital camera is probably best. It has automatic settings, so all you have to do is aim the camera, press the shutter and viola! Instant picture!
However, if you prefer more control over the picture taking process, try buying a mid-range digital camera. There is a wide range in both price and features. For the more serious hobby photographer, there are "prosumer" cameras midway between point-and-shoot cameras and digital SLR cameras. They offer better lens quality and usually more features than a point-and-shoot, though those little cameras can come pretty loaded these days!
Digital SLR cameras are top of the line and more expensive. These work more like traditional cameras, having a body with detachable lens. This gives you more options with being able to change lens, but it's also much more expensive. Just one lens can cost as much as a point-and-shoot digital camera! There's also usually a steeper learning curve to figure out how to use all the options on a digital SLR camera.
However, if you're buying your first digital camera, intermediate, "prosumer" and digital SLR cameras probably aren't the best choice. All the settings and features can be a little overwhelming for the beginner, and your expensive camera may end up collecting dust somewhere. Try a low to midrange camera first and get a feel for digital cameras and what features are most important to you. Then when you're ready to move up and buy a better digital camera, you'll have a better idea of what to look for before you lay out your hard earned cash!
What To Look For When You're Ready To Buy A Digital Camera
You can buy digital cameras in all sorts of places these days, from fancy department stores to discount stores, photography/camera shops and many stores online. While you can sometimes find great deals on-line, if this is your first digital camera, go to shops and look at different cameras if at all possible. It helps to pick it up and get the feel of the camera in your hand to see if it's comfortable and the controls are easy to use, and you can check out what features it has and how they work.
But what exactly are you looking for?
A pixel makes your picture....
One of the first things to check out when buying a digital camera is the MEGAPIXELS. A pixel is a single dot in a graphics image. A megapixel is equivalent to one million pixels. A 1-megapixel camera would produce an image roughly 1200 pixels wide by 900 pixels high, a 3 megapixel would be 2048 x 1536 megapixels, and so on. Higher megapixels mean better resolution, but aren't the whole picture. The main thing to keep in mind is the more megapixels, the bigger image you can print.
Approximate Megapixels vs. Print Size
2 Megapixels prints well up to 4x6 inches
3 Megapixels prints well up to 5x7 inches
4 Megapixels prints well up to 6x8 inches
6 Megapixels prints well up to 7x10 inches
8 Megapixels prints well up to 10x14 inches
12 Megapixels prints well up to 16x24 inches
For email, websites and printing snapshots, a 3 to 5-megapixel camera is a good choice. If you want to make high quality 8x10 prints or larger, you need more megapixels. Higher megapixels also allow you to crop down to a smaller portion of the picture while still retaining sharpness in prints.
One other thing to keep in mind when considering megapixels and resolution, be sure you are getting optical resolution. This is the actual number of megapixels the camera records. Some cameras offer interpolated resolution to get bigger pictures from the same number of megapixels by using software algorithms to determine what color pixels to add, so the picture becomes bigger at the expense of clarity.
Opt for optical...
Digital cameras have two kinds of zoom, optical and digital. In this case, focus on the optical zoom. It's the one that actually uses the lens' optics to bring the subject closer. The higher the number, the further away you can "pull in" your subject. The digital zoom merely takes the original information and makes it bigger, and once again, clarity is sacrificed. Most serious photographers turn off digital zoom. Stick to optical!
For Your Viewing Pleasure...
Digital cameras commonly use an LCD screen instead of a viewfinder to focus on your subject, though some come equipped with both. Check the size of the screen when buying a digital camera to be sure you can comfortably see your subject. It's also really handy to have a flip screen that allows you to hold your camera low or high, and still be able to see what's on the screen.
Fun features...
Many digital cameras offer settings for such things as burst shooting mode, which is handy if you want to take pictures of moving subjects. The camera shoots a series of pictures without pause, then writes the files to memory. Other features allow for manually changing settings, special effects, short digital movie files, using an external flash, and much more. Look over several different cameras, decide what features you just have to have, and which are on the "nice to have but not vital" list. No one camera will do everything well.
Get the Picture...
You've got to get the pictures out of the camera to share them. Usually the files are downloaded to your computer through a USB port, so make sure your computer has one. Also, keep in mind when choosing a camera, the more megapixels, the bigger the files. You've got to store those files somewhere, so how much memory is available on your computer? Does it have a CD burner?
However, you can still buy a digital camera even if you don't have a computer. Many photo labs, even in places like Walmart or Kmart, have machines with the capability of making prints and/or photo CD's from memory cards, and will make a disk of the files, sort of like digital negatives. There's also the option of buying a photo printer with a docking station for your camera. Just plug the camera into the docking station, and bypass the need for a computer to print.
Cash After Camera
When buying your digital camera, keep some cash in reserve, because there are two more important purchases you need to make.
1. Memory - The digital camera's equivalent of film, the amount of memory determines how many pictures you can take. Different cameras use different types of memory, so the first step is to find out what your camera uses. The most popular types are: Secure Digital (SD), CompactFlash (CF), SmartMedia (SM), Memory Stick (MS), MultiMediaCard (MMC), and xD-Picture Card (xD).
Cameras are usually packaged with a small MB-sized card. A second card of 64 MB is good, but of course the more MB and the more cards, the more pictures you can take before having to download and erase the images. The different cards are NOT interchangeable, so be sure to buy the right kind for your camera!
2. Battery - There's nothing more frustrating than being in the middle of snapping pictures and the battery dies. Get extras. It's worth the expense to have a second battery charged and waiting should the one in your camera lose power. The rechargeable ones are more expensive, but the ability to use them over and over makes them worth the initial outlay of cash.
That's The Total Package!
There you have the basics for choosing a digital camera. Decide what kind of pictures you are likely to take, what size prints you want to make, how much zoom, and are there any extras you can't live without? Look for the camera that most closely matches your list in your price range, buy a bigger memory card and an extra battery set, and you're good to go!
Have fun sharing those pictures with friends and family!
The Best Digital Cameras Product to Buy
PowerShot A95 Digital Camera (5.0MP, 2592x1944, 3x Opt, 32MB CompactFlash Card) Strengths: High quality 5MP pictures, Camera feels great in hand, swivel LCD screen, best bang for the buck camera. Weaknesses: Included 32MB CF card is too small. Summary: This camera is awesome. I upgraded from a Canon A70 and it was well worth the money. The Canon A95 uses 4 AA bateries, but it eats through normal alkalines way too fast. I highly recommend getting rechargeable NiMH AA batteries and a quick charger.The swivel screen is a major plus, it's 1.8" compared to 1.5" from the Canon A70. The screen is also higher resolution than the A70.I have used the camera for 3 weeks and printed about 50 pics so far. The pics look great and I even cropped to zoom in on some pictures and you couldn't see any sign of pixelation. I love the manual flexibility with this camera, plus the automatic modes make it easy for anyone to use.The camera has a nice solid feel to it and fits well in the hand. I prefer the Canon A95's size rather than the ultra compact cameras like Sony's T1 because you can easily hold the camera in one hand and take pics. But if you have an ultra compact camera, you have to hold it awkward and it my easily fall from your hand.I highly recommend this camera to anyone looking into getting a 5MP camera that's affordable, flexible, and normal size.
further info, visit; http://www.petrousdigitalcameraprices.blogspot.com
Cyber-shot DSC-W1 Silver Digital Camera (5.1MP, 2592x1944, 3x Opt, 32MB Memory Stick)
Strengths: Size, LCD, AA batteries, movie mode and black & white modes are GREAT - use 'em all the time. Weaknesses: Flash is weak, zoom inadequate at times. Summary: I spent a LOT of time investigating digital cameras online -one would think I was buying a car or something. Anyway I am a novice camera user and remain very impressed with this little guy. I would certainly recommend it. The movie mode is great for 'vignettes' or small movie snapshots. I also use the black and white a lot. I also didn't think the LCD would matter very much, but it does: I never use the viewfinder. I appreciate the large size of the LCD when passing the camera around to friends to view pictures and movies.Hint #1: Immediately jack up the megapixel resolution to 5 so that you can capture moments in the best resolution possible. Then, bypass Sony's ridiculous profit margins- for memory cards buy SanDisk instead. The 512 MB is fantastic - you will get a lot of memory space. I saved $75.00 this way - $150 vs. $225. The 32 MB is inadequate for daily usage. I use it as 'emergency' memory when my 512 has filled up on me and I need an extra pinch of memory to get me through the moment.Hint #2: Do NOT buy the Sony camera case. They charge a ridiculous price for a shoddy version. Go for a Lowepro - I paid ten dollars and it is very sturdy - also has a nice inside pocket to keep memory cards.Hint #3: Buy a separate set of rechargeable batteries you can swap on the go. The AA battery format is a huge plus.Picture clarity is great for the size and price of the camera. The camera and case are small enough that I WILL take it anywhere, and have. In other words, it is a convenient model.I did find that for indoors the flash was inadequate at a distance. The zoom could also have been 4x or 5x.All in all I am quite happy with this model - but stay away from buying Sony brand 'peripherals' unless you like spending money.This camera fulfills my needs. The only reason it does not get five stars for the above drawbacks. Otherwise, a great job by Sony and their third-party peripheral competitors!
further info visit; http://www.petrousdigitalcameraprices.blogspot.com
FinePix E550 Digital Camera (6.3MP, 4048x3040, 4x Opt, 16MB xD-Picture Card)
Strengths: Well priced, 6+mp, all features including raw image Weaknesses: This camera uses 2 AA cells in a hurry Summary: As a professional digital camera lecturer, I must admit that the Fuji E-550 was a very pleasant surprise for me. Priced at about $340, this digital camera produced digital photos that were much sharper, more detailed, and more excellent than I, frankly expected.I found the digital camera very easy to use right out of the box. While this digital camera does have a 12mp interpolated image size available, I found the 6mp native image size to have more contrast, detail and resolution.As you might expect in a consumer digital camera, the digital camera's flash is not very powerful. At 200 ISO it will produce excellent exposures out to 13 feet. By adding a supplementary slave flash such as the Sony HVL-FSL1B and a bit of flash compensation, I was able to extend the effective flash range out to 25 feet, making the Fuji E-550 useful for indoor photos of large groups.The Fuji E-550 does an equally amazing job with macro or close-up digital photos. It will focus quite close making it very effective for photos of small items and jewelery that might be photographed for sale on auction sites such as www.ebay.com.The strongest suit for the Fuji E-550 is it ability to record a great deal of detail with extreme sharpness and clarity while being handheld. The Fuji E-550 is also very capable of taking excellent night photos when it is placed on a tripod.All in all, I was extremely impressed with the Fuji E-550. I received a lot more digital camera than I expected for the samll price of $340. For those who like to use the raw image format, you will understand that you can essentially re-take the digital photo all over again right in your computer. This is a huge advantage.Of course, being a Fuji digital camera, the Fuji E-550 uses the somewhat more expensive XD electronic data chips. However, the Fuji E-550 is very speedy. From power on to being ready to take the first digital photo takes 1.4 seconds. This digital camera is equally as fast in writing your digital photo to the XD chip.The newer Fuji digital cameras are marketed to compete dollar for dollar with the Kodak line of digital cameras. Therefore, they tend to be very competitive with Kodak and offer in most cases, a lot more features.There is available for the Fuji E-550 an adaptor as well as both a wide angle and a telephoto (1.9X) supplementary lens. The supplementary lenses are very fairly priced and readily available through Fuji's own website. This is a pleasant contrast to the accessories offered by Sony, through their own website, whose wide angle and telephoto supplementary lenses are unreasonably high in price.
Conclusion: The Fuji E-550 is a top quality digital camera. It more capable than most might expect. In addition, it is quite small and pocket sized, extending its appeal to many more digital camera users. It is worthy of your attention. The digital photos produced by this digital camera are amazing and compare most favorably with much more expensive consumer digital cameras. I would happily purchase this camera again.I will be very confident in introducing the Fuji E-550 to the attendees of my workshops all over the world. It is a digital camera that I can point to with a lot of pride, simply because it gives the digital camera user many features and excellent digital photos for a very resonable price.
further info please visit; http://www.petrousdigitalcameraprices.blogspot.com
further info, visit; http://www.petrousdigitalcameraprices.blogspot.com
Cyber-shot DSC-W1 Silver Digital Camera (5.1MP, 2592x1944, 3x Opt, 32MB Memory Stick)
Strengths: Size, LCD, AA batteries, movie mode and black & white modes are GREAT - use 'em all the time. Weaknesses: Flash is weak, zoom inadequate at times. Summary: I spent a LOT of time investigating digital cameras online -one would think I was buying a car or something. Anyway I am a novice camera user and remain very impressed with this little guy. I would certainly recommend it. The movie mode is great for 'vignettes' or small movie snapshots. I also use the black and white a lot. I also didn't think the LCD would matter very much, but it does: I never use the viewfinder. I appreciate the large size of the LCD when passing the camera around to friends to view pictures and movies.Hint #1: Immediately jack up the megapixel resolution to 5 so that you can capture moments in the best resolution possible. Then, bypass Sony's ridiculous profit margins- for memory cards buy SanDisk instead. The 512 MB is fantastic - you will get a lot of memory space. I saved $75.00 this way - $150 vs. $225. The 32 MB is inadequate for daily usage. I use it as 'emergency' memory when my 512 has filled up on me and I need an extra pinch of memory to get me through the moment.Hint #2: Do NOT buy the Sony camera case. They charge a ridiculous price for a shoddy version. Go for a Lowepro - I paid ten dollars and it is very sturdy - also has a nice inside pocket to keep memory cards.Hint #3: Buy a separate set of rechargeable batteries you can swap on the go. The AA battery format is a huge plus.Picture clarity is great for the size and price of the camera. The camera and case are small enough that I WILL take it anywhere, and have. In other words, it is a convenient model.I did find that for indoors the flash was inadequate at a distance. The zoom could also have been 4x or 5x.All in all I am quite happy with this model - but stay away from buying Sony brand 'peripherals' unless you like spending money.This camera fulfills my needs. The only reason it does not get five stars for the above drawbacks. Otherwise, a great job by Sony and their third-party peripheral competitors!
further info visit; http://www.petrousdigitalcameraprices.blogspot.com
FinePix E550 Digital Camera (6.3MP, 4048x3040, 4x Opt, 16MB xD-Picture Card)
Strengths: Well priced, 6+mp, all features including raw image Weaknesses: This camera uses 2 AA cells in a hurry Summary: As a professional digital camera lecturer, I must admit that the Fuji E-550 was a very pleasant surprise for me. Priced at about $340, this digital camera produced digital photos that were much sharper, more detailed, and more excellent than I, frankly expected.I found the digital camera very easy to use right out of the box. While this digital camera does have a 12mp interpolated image size available, I found the 6mp native image size to have more contrast, detail and resolution.As you might expect in a consumer digital camera, the digital camera's flash is not very powerful. At 200 ISO it will produce excellent exposures out to 13 feet. By adding a supplementary slave flash such as the Sony HVL-FSL1B and a bit of flash compensation, I was able to extend the effective flash range out to 25 feet, making the Fuji E-550 useful for indoor photos of large groups.The Fuji E-550 does an equally amazing job with macro or close-up digital photos. It will focus quite close making it very effective for photos of small items and jewelery that might be photographed for sale on auction sites such as www.ebay.com.The strongest suit for the Fuji E-550 is it ability to record a great deal of detail with extreme sharpness and clarity while being handheld. The Fuji E-550 is also very capable of taking excellent night photos when it is placed on a tripod.All in all, I was extremely impressed with the Fuji E-550. I received a lot more digital camera than I expected for the samll price of $340. For those who like to use the raw image format, you will understand that you can essentially re-take the digital photo all over again right in your computer. This is a huge advantage.Of course, being a Fuji digital camera, the Fuji E-550 uses the somewhat more expensive XD electronic data chips. However, the Fuji E-550 is very speedy. From power on to being ready to take the first digital photo takes 1.4 seconds. This digital camera is equally as fast in writing your digital photo to the XD chip.The newer Fuji digital cameras are marketed to compete dollar for dollar with the Kodak line of digital cameras. Therefore, they tend to be very competitive with Kodak and offer in most cases, a lot more features.There is available for the Fuji E-550 an adaptor as well as both a wide angle and a telephoto (1.9X) supplementary lens. The supplementary lenses are very fairly priced and readily available through Fuji's own website. This is a pleasant contrast to the accessories offered by Sony, through their own website, whose wide angle and telephoto supplementary lenses are unreasonably high in price.
Conclusion: The Fuji E-550 is a top quality digital camera. It more capable than most might expect. In addition, it is quite small and pocket sized, extending its appeal to many more digital camera users. It is worthy of your attention. The digital photos produced by this digital camera are amazing and compare most favorably with much more expensive consumer digital cameras. I would happily purchase this camera again.I will be very confident in introducing the Fuji E-550 to the attendees of my workshops all over the world. It is a digital camera that I can point to with a lot of pride, simply because it gives the digital camera user many features and excellent digital photos for a very resonable price.
further info please visit; http://www.petrousdigitalcameraprices.blogspot.com
CCTV Camera, CCTV Surveillance Camera, Wireless Camera, CCTV Camera Distributor
Although the application of CCTV security have not changed very much over the past years, the tools and equipment have significantly. Cameras became smaller, cheaper and better, but the major breakthrough happened in recording equipment.
Therefore many customers shopping for complete CCTV monitoring and recording systems are confused by such a verity of available products. Goal of this article is to guide buyers toward best possible and most economical type of CCTV equipment, based on intended implementation and requirements.
Selecting the right cameras.It is virtually impossible to describe all types of available ones in this short article. We will focus our attention on most popular and widely used camera types
instead.
CCTV produce images using CMOS or CCD (Charge Couple Device) chips. Tiny, very low price CCTV cameras usually use CMOS technology, produce poor quality images and have very poor light sensitivity. Decent quality CCTV cameras use CCD technology. The size of the CCD chip is normally 1/4", 1/3" or 1/2". As a rule of thumb, the larger the size, the higher the quality of the image produced and the higher the price. However, higher density 1/4" and 1/3" CCD chips can now produce as good an image as many 1/3" or 1/2" chips.
The number of TV lines in the security camera image is a measure of picture resolution
(sharpness). The larger the number of TV lines, the better the resolution and hence, overall picture quality. Standard resolution camera may have 350-380 lines, over 400 TV Lines is generally considered good resolution while over 500 TV lines is considered high resolution. B/W chip cameras produce greater resolution and better light sensitivity, therefore suitable for use in dark areas where light conditions are poor most of the time.
On the other hand color cameras offer more realistic and natural picture. CCTV cameras
Professional grade cameras.
Have box type body with the ability to use different types and size of lenses. Exchangeable
lenses enable this camera, to monitor objects from virtually any distance. Although for indoor use, they can be used for outdoor when combined with weatherproof housing. They are considered to be the most flexible and widely used by professionals for commercial installations.
Bullet cameras.
Bullet cameras are, as the name suggest contained inside bullet shaped housing.
Most bullet cameras are weatherproof and sealed without the ability to use different lenses.
Great advantage of bullet camera is the small size and integrated design, some bullet cameras will even have infrared LED future built-in. simply LED light in infrared spectrum (not visible to human eye). This light will illuminate viewing area, making possible monitoring in complete darkness. This is great future, but it only works up to certain distance (usually between 10 and 50 ft. depending on model) Vary simple to install and estheticly designed, bullet cameras are great choice for residential and do-it-yourself installations where monitoring objects are within about 25ft from the camera location (with standard 3.6mm lens).
Board Cameras.
Board Cameras are basically fixed lens mounted on a circuit board. These cameras may be packaged in a small case (Mini Cameras) or dome (Mini Dome) or simply sold unpackaged, for mounting by the purchaser. Lenses in these are either of a normal industry aperture or a "pinhole" lens of very small aperture. Pinhole lens cameras are often called "spy" cameras and may be mounted in a concealed way for covert surveillance purposes. The most popular examples of covert board ones are smoke detector and motion detector cameras.
Since the lenses in board cameras are pre-mounted, have a fixed iris and are usually of a short focal length (i.e. wide angle), their flexibility of usefulness is limited. However, this type of camera can provide a low cost solution in the right situation, particularly in a home environment. We have shortly described most popular types of cameras, lets now discus, how and where they mite be used.
Professional types with C/CS mount lens attachment generally offer best performance and many important futures, like lens control output, Back Light Compensation and many more...
Distance from monitoring object to the camera is not an issue, that is why ability to select different lenses, based on location is so important. Installation is bit complicated and professional installation strongly recommended. We recommend this type of security cameras for commercial installations.
Most Bullet cameras in comparison, do not offer high resolution and lens selection flexibility, but are likely to be weatherproof, some will have infrared light built-in and most of all they are relatively easy to implement. They usually come with 3.6mm lens witch are considered to be suitable for most standard installations (good for covering small to medium size room or equivalent).
For larger rooms or longer distances, cameras with 6mm or higher lens may be required. They are great choice for any do-it-yourself installation.
Board cameras in contrast are widely used in covert camera installations, sometimes called
Spy Cameras. Many are basically board ones with built-in transmitter. We are not going to go into wireless cameras right now, as this would be enough material for completely new article.
Board cameras are sold as plain circuit board, for integrating into hidden camera devices. They are also available in dome housing, as vary popular Dome Camera or integrated with Smoke Detector, Motion Detector, Exit Sign and so on. Most also come with 3.6mm lens although some will allow lens to be replaced.
Over the time, most practical design has been Dome Camera with its aesthetic appearance it blends into surroundings, especially with drop down sealing, great for use in stores, lobbies, gas stations and other public places. Practical solution for covert installation are also, Motion and Smoke Detector cameras, they are absolutely not substitute for your security alarm or fire
protection. They should always be selected based on the location of the camera (inside/outside), distance from the monitoring object, light condition and budget.
When shopping for security cameras, customers are faced with the fact that they will need to select one or another recording device.
The days of well-known CCTV time-lapse recorder are almost over.
Although some customers still prefer this old fashioned recording solution, it is well worth to invest some extra money to purchase a good quality digital video recorder (DVR). Digital recorder transfers analog camera video feed into format, and stores it on hard drive. There are two major types of digital recorders on the market right now.
www.aditgroup.com
Therefore many customers shopping for complete CCTV monitoring and recording systems are confused by such a verity of available products. Goal of this article is to guide buyers toward best possible and most economical type of CCTV equipment, based on intended implementation and requirements.
Selecting the right cameras.It is virtually impossible to describe all types of available ones in this short article. We will focus our attention on most popular and widely used camera types
instead.CCTV produce images using CMOS or CCD (Charge Couple Device) chips. Tiny, very low price CCTV cameras usually use CMOS technology, produce poor quality images and have very poor light sensitivity. Decent quality CCTV cameras use CCD technology. The size of the CCD chip is normally 1/4", 1/3" or 1/2". As a rule of thumb, the larger the size, the higher the quality of the image produced and the higher the price. However, higher density 1/4" and 1/3" CCD chips can now produce as good an image as many 1/3" or 1/2" chips.
The number of TV lines in the security camera image is a measure of picture resolution
(sharpness). The larger the number of TV lines, the better the resolution and hence, overall picture quality. Standard resolution camera may have 350-380 lines, over 400 TV Lines is generally considered good resolution while over 500 TV lines is considered high resolution. B/W chip cameras produce greater resolution and better light sensitivity, therefore suitable for use in dark areas where light conditions are poor most of the time.On the other hand color cameras offer more realistic and natural picture. CCTV cameras
Professional grade cameras.
Have box type body with the ability to use different types and size of lenses. Exchangeable
lenses enable this camera, to monitor objects from virtually any distance. Although for indoor use, they can be used for outdoor when combined with weatherproof housing. They are considered to be the most flexible and widely used by professionals for commercial installations.Bullet cameras.
Bullet cameras are, as the name suggest contained inside bullet shaped housing.
Most bullet cameras are weatherproof and sealed without the ability to use different lenses.
Great advantage of bullet camera is the small size and integrated design, some bullet cameras will even have infrared LED future built-in. simply LED light in infrared spectrum (not visible to human eye). This light will illuminate viewing area, making possible monitoring in complete darkness. This is great future, but it only works up to certain distance (usually between 10 and 50 ft. depending on model) Vary simple to install and estheticly designed, bullet cameras are great choice for residential and do-it-yourself installations where monitoring objects are within about 25ft from the camera location (with standard 3.6mm lens).Board Cameras.
Board Cameras are basically fixed lens mounted on a circuit board. These cameras may be packaged in a small case (Mini Cameras) or dome (Mini Dome) or simply sold unpackaged, for mounting by the purchaser. Lenses in these are either of a normal industry aperture or a "pinhole" lens of very small aperture. Pinhole lens cameras are often called "spy" cameras and may be mounted in a concealed way for covert surveillance purposes. The most popular examples of covert board ones are smoke detector and motion detector cameras.
Since the lenses in board cameras are pre-mounted, have a fixed iris and are usually of a short focal length (i.e. wide angle), their flexibility of usefulness is limited. However, this type of camera can provide a low cost solution in the right situation, particularly in a home environment. We have shortly described most popular types of cameras, lets now discus, how and where they mite be used.
Professional types with C/CS mount lens attachment generally offer best performance and many important futures, like lens control output, Back Light Compensation and many more...
Distance from monitoring object to the camera is not an issue, that is why ability to select different lenses, based on location is so important. Installation is bit complicated and professional installation strongly recommended. We recommend this type of security cameras for commercial installations.
Most Bullet cameras in comparison, do not offer high resolution and lens selection flexibility, but are likely to be weatherproof, some will have infrared light built-in and most of all they are relatively easy to implement. They usually come with 3.6mm lens witch are considered to be suitable for most standard installations (good for covering small to medium size room or equivalent).For larger rooms or longer distances, cameras with 6mm or higher lens may be required. They are great choice for any do-it-yourself installation.
Board cameras in contrast are widely used in covert camera installations, sometimes called
Spy Cameras. Many are basically board ones with built-in transmitter. We are not going to go into wireless cameras right now, as this would be enough material for completely new article.Board cameras are sold as plain circuit board, for integrating into hidden camera devices. They are also available in dome housing, as vary popular Dome Camera or integrated with Smoke Detector, Motion Detector, Exit Sign and so on. Most also come with 3.6mm lens although some will allow lens to be replaced.
Over the time, most practical design has been Dome Camera with its aesthetic appearance it blends into surroundings, especially with drop down sealing, great for use in stores, lobbies, gas stations and other public places. Practical solution for covert installation are also, Motion and Smoke Detector cameras, they are absolutely not substitute for your security alarm or fire
protection. They should always be selected based on the location of the camera (inside/outside), distance from the monitoring object, light condition and budget.When shopping for security cameras, customers are faced with the fact that they will need to select one or another recording device.
The days of well-known CCTV time-lapse recorder are almost over.
Although some customers still prefer this old fashioned recording solution, it is well worth to invest some extra money to purchase a good quality digital video recorder (DVR). Digital recorder transfers analog camera video feed into format, and stores it on hard drive. There are two major types of digital recorders on the market right now.
www.aditgroup.com
Making the Right Choice While Looking for Cctv Security Camera
There are normally six things to look at before Selecting a CCTV security systems;
1. Camera Selection
2. Recording Options
3. Detection
4. Time and Date Stamping
5. Cable and Connectors
6. Camera Protection
1.0 Camera Selection
1.1 Location
Is the camera to be located indoors or outdoors? If outdoors then you need to ensure that it is appropriate for the environmental conditions that are likely to be encountered such as rain, snow, sun-glare, low light etc. Outdoor CCTV camera security systems Outdoor cameras should either be classed as weather resistant or mounted in a special enclosure to provide protection. All CCTV outdoor cameras provided by Voltek are weather resistant and the cable entry points are sealed. The leads are of sufficient length to enable connections to be made inside the building.
1.2 Light Levels
Choosing the right camera based on the amount of available light is very important for an effective security system. An ordinary colour or even monochrome camera will not give very good pictures in low light conditions although the monochrome will perform better than an equivalent colour one. Solutions available for low light conditions can include:
* B&W cameras with built in IR illumination
* Colour Day / Night cameras
* Use of additional security lighting
* Use of a separate IR illuminator in conjunction with a monochrome camera. When using IR illumination ensure that the range of the illuminators is adequate for your needs.
Light levels are usually measured in lux and although full daylight can be around 10,000 lux, dusk can be as low as 1-10 lux, complete darkness is 0 lux and side street lighting can also be less than 1 lux in some cases. The closer a camera is rated to 0 lux the better its performance in low light levels.
1.3 Colour, Black and White or Day Night Cameras
B&W cameras generally provide better image quality than colour ones at lower light levels. They are also usually cheaper than colour ones of equivalent specification. Colour cameras require the availability of good lighting and will generally provide better recognition capability. Day Night cameras provide the best of both worlds in an external environment. They operate as colour cameras during the day (or in good light conditions) and automatically change to B&W when the light levels drop. All Voltek Day Night cameras are supplied with built-in Infra-red illuminators which enable the cameras to see in darkness.
1.4 Wired or Wireless
Wireless CCTV cameras are easier to install. There is no cabling to run from the camera to the receiver and they are ideal for temporary applications, rapid deployment or where running cable is not desirable. TheDay Night wireless Security CCTV cameras cameras do however require a power source and whilst most will have the capability to be powered by batteries these do not have a very long life - a matter of hours in some cases. Wherever possible the cameras should be powered by the mains. Typical range for wireless camera systems is 100m free-space but this can reduce significantly to around 20 meters in a typical household environment. In some cases there is also the potential for interference when using wireless systems.
1.5 Visible Deterrence or Covert / Discreet Monitoring
For visible deterrence the use of larger cameras housed in traditional enclosures are ideal. For covert or discreet applications Voltek supplies Discreet or Covert CCTV security cameras that are:
* Very small and can be installed in covert locations, or
* In enclosures designed to disguise the presence of a camera.
Many of the cameras manufactured by Voltek are both stylish and discreet in the design of their enclosures and this makes them very suitable for domestic applications.
1.6 Audio
If the ability to monitor or record sound is important then the camera needs to have a built-in microphone. This enables one-way audio monitoring. Some cameras such as the SuperCam2 from Voltek have a 2-way speech facility that enables you to speak with your visitor without answering the door.
1.7 Camera Viewing Quality
The resolution, size and type of camera sensor will influence the quality of the viewable image.
Resolution – This is expressed as the number of television lines (TVL) that the camera is capable of producing. The higher the TVL value the greater the resolution and hence the quality of the images. A typical entry-level camera will be around 300 TVL with higher resolution cameras having a value of 400+ TVL.
Size – A larger image sensor will give a better image definition than a smaller sensor. For example, a 1/3” image sensor will produce a better image than a 1/4 ” sensor.
Type – There are 2 types of image sensor. CMOS sensors are mass-produced and used in entry-level cameras to provide cost savings. CCD sensors are used in professional CCTV cameras and provide a higher quality image.
It is important to remember that the quality of the recorder also influences the quality of the CCTV footage. For example, if you use a high-resolution camera but a low-resolution recorder then the CCTV footage that is captured will still be of low resolution.
1.8 Single Camera or Multiple Camera Systems
Do you need to protect and view a single area or multiple areas? If you are likely to require protection of additional areas at a future date then consider buying a system that can be expanded as and when required. Voltek has a range of products that will allow you to connect and use up to 4, 8 or even 16 cameras. These include:
Switchers - These are units that enable a multi-camera system to switch between the various cameras. The switching can be done in a number of ways:
* Manually by the user
* Automatic sequential switching between cameras
* Upon detection of movement by a PIR camera.
Multiple Security CCTV cameras with Switchers The cameras are connected to the switcher and the output from the switcher can be viewed on a TV or it can be connected directly to the recording device such as the VCR or DVD recorder. CCTV switchers can typically allow connection of upto 4 or 8 cameras. The Spectrum control units from Voltek also have additional built-in functionality such as automatic video activation and time and date stamp. It is important to remember however that using a switcher will only allow you to view and record one camera at a time.
Standalone DVRs - Use of digital video recorders allows single or multi-camera systems to be viewed and / or recorded simultaneously.
Voltek supplies a range of 4, 8 and 16 channel DVRs allowing you to install a very comprehensive cctv system.
PC-Based Security Systems - These make use of a PCI card that is fitted inside your computer. They will allow connection of upto 4, 8 or 16 cameras and help turn your existing PC into a sophisticated cctv system.
2.0 Recording Options
If you want to be able to record your CCTV footage then the following factors need to be taken into account:
* Maximum length of recording time required
* Quality of recording
* Method of recording:
o Continuous
o Manual
o Event Led - i.e. when your system detects motion
* Recording Equipment
o Analogue
o Digital
* Capability for storage, retrieval and transfer of cctv footage
2.1 Domestic VCR
This is a simple and low cost option that can provide good quality footage recorded in real time. VCRs can be used to provide continuous recording of up-to 8 hours or event led recording when used in conjunction with a PIR camera and a VCR activator. When using PIR cameras to carry out event led recordings you need to consider the start-up time for the VCR. For example, if the recorder takes a few seconds to actually begin recording each time it receives the signal from the camera then the event may have elapsed before it is recorded (a person walking across the camera range may have passed the field of view before the image is captured on tape). In these situations a separate PIR detector could be used to trigger the recording and overcome this problem. The other thing to bear in mind is that you cannot set the VCR to record a TV channel whilst the camera input is selected.
2.2 Domestic DVD Recorder
These operate on a similar principle to the domestic VCR but offer the additional benefits of:
* Higher quality digital recording
* Increased storage capacity
* Improved search and retrieval capability
However, for disk only recorders the start-up time before recording actually commences is generally longer than a VCR. To overcome this it is recommended that recorders with a built-in hard drive are used
2.3 Standalone Digital Video Recorders
These are rapidly becoming the most popular method of recording CCTV footage. Essentially a DVR is a standalone piece of hardware that is designed exclusively for recording CCTV footage. It has a number ofDigital Security camera recorders clear advantages over the traditional analogue systems and these include:
* Storage Capacity – Days, weeks and even months of high resolution recording is possible through use of large capacity hard drives
* Consistent Quality Recording – No deterioration of image quality no matter how many you overwrite onto the recording device or how long you store the images for
* Viewing and Retrieval – Quick and easy access of footage due to digital format
* Transfer and Storage – The digital format allows ease of transfer and storage of footage. Transfer and storage capability is further enhanced by DVRs with built-in CD writers and USB ports.
* Remote Access – Many DVRs have the capability for remote access from anywhere in the world through use of a remote PC
* Multiplexed Recording – Capability to view and record multiple cameras simultaneously.
2.4 PCI Cards
These are digital video capture cards that can be fitted inside your existing PC to allow the connection of multiple CCTV cameras. The functionality and benefits of PCI cards is very similar to that of DVRs.
3.0 Detection
Even with systems that have a very long recording capacity, it is not always desirable to record continuously. Event-led recording is a more efficient means of capturing relevant footage and can be achieved by:
3.1 PIR Movement Detectors
Some cameras have PIR detectors built-in and for those that don’t it is possible to install a separate PIR as part of the overall system. In multiple camera systems with PIRs the footage that is being displayed on screen will automatically change to the area that has detected movement.
3.2 Video Motion Detection
This is used in digital CCTV systems and works by analysing the video signal from a camera. Changes in signal are recognised as movement and subsequently used to trigger recording if required. All Voltek digital systems allow users to mark one or more rectangular areas within the display screen and only when motion is detected within these areas will the system begin recording. Where possible, use of PIR movement detection is preferable rather than video motion detection, as it more reliable particularly for external use.
4.0 Time and Date Stamping
This feature superimposes the time and date onto your CCTV footage. Having this feature can be really useful to identify when an event occurred and was recorded, particularly if the footage is to be used for evidence purposes. For domestic systems Voltek offers a separate time and date generator that can be added to your system. The Spectrum control CCTV securyty cameras has this facility already built-in. The facility is also integral to all the Voltek range of digital CCTV systems.
5.0 Cable and Connectors
Security camera wires connectors Cameras can be connected in a variety of ways. All our domestic cameras are supplied with 20m of cable and scart and / or phono plugs to connect directly into your TV, VCR or DVD recorder. All our professional cameras are supplied with 20m of cable and BNC connectors that will plug into our range of digital recorders. The Voltek camera leads can be extended upto 100m in total by the use of appropriate extension leads. Co-axial cable with a local power supply to the camera can enable the camera to be sited upto 250m away from the monitor or recording device. Detailed information on connectors and cable for each of the Voltek cameras is available on the relevant product page on the website.
6.0 Camera Protection
If your camera is likely to be a target for vandals then consider protecting it with one of Voltel wire cages is a Security camera wire cages
must. This not only saves your Security cameras from Vandalas but protects any evidences collected during the vandal acts.
We at For your Home along with Voltek really hope the following guide will help you in selecting the perfect security cameras for Your Homes and Gardens
1. Camera Selection
2. Recording Options
3. Detection
4. Time and Date Stamping
5. Cable and Connectors
6. Camera Protection
1.0 Camera Selection
1.1 Location
Is the camera to be located indoors or outdoors? If outdoors then you need to ensure that it is appropriate for the environmental conditions that are likely to be encountered such as rain, snow, sun-glare, low light etc. Outdoor CCTV camera security systems Outdoor cameras should either be classed as weather resistant or mounted in a special enclosure to provide protection. All CCTV outdoor cameras provided by Voltek are weather resistant and the cable entry points are sealed. The leads are of sufficient length to enable connections to be made inside the building.
1.2 Light Levels
Choosing the right camera based on the amount of available light is very important for an effective security system. An ordinary colour or even monochrome camera will not give very good pictures in low light conditions although the monochrome will perform better than an equivalent colour one. Solutions available for low light conditions can include:
* B&W cameras with built in IR illumination
* Colour Day / Night cameras
* Use of additional security lighting
* Use of a separate IR illuminator in conjunction with a monochrome camera. When using IR illumination ensure that the range of the illuminators is adequate for your needs.
Light levels are usually measured in lux and although full daylight can be around 10,000 lux, dusk can be as low as 1-10 lux, complete darkness is 0 lux and side street lighting can also be less than 1 lux in some cases. The closer a camera is rated to 0 lux the better its performance in low light levels.
1.3 Colour, Black and White or Day Night Cameras
B&W cameras generally provide better image quality than colour ones at lower light levels. They are also usually cheaper than colour ones of equivalent specification. Colour cameras require the availability of good lighting and will generally provide better recognition capability. Day Night cameras provide the best of both worlds in an external environment. They operate as colour cameras during the day (or in good light conditions) and automatically change to B&W when the light levels drop. All Voltek Day Night cameras are supplied with built-in Infra-red illuminators which enable the cameras to see in darkness.
1.4 Wired or Wireless
Wireless CCTV cameras are easier to install. There is no cabling to run from the camera to the receiver and they are ideal for temporary applications, rapid deployment or where running cable is not desirable. TheDay Night wireless Security CCTV cameras cameras do however require a power source and whilst most will have the capability to be powered by batteries these do not have a very long life - a matter of hours in some cases. Wherever possible the cameras should be powered by the mains. Typical range for wireless camera systems is 100m free-space but this can reduce significantly to around 20 meters in a typical household environment. In some cases there is also the potential for interference when using wireless systems.
1.5 Visible Deterrence or Covert / Discreet Monitoring
For visible deterrence the use of larger cameras housed in traditional enclosures are ideal. For covert or discreet applications Voltek supplies Discreet or Covert CCTV security cameras that are:
* Very small and can be installed in covert locations, or
* In enclosures designed to disguise the presence of a camera.
Many of the cameras manufactured by Voltek are both stylish and discreet in the design of their enclosures and this makes them very suitable for domestic applications.
1.6 Audio
If the ability to monitor or record sound is important then the camera needs to have a built-in microphone. This enables one-way audio monitoring. Some cameras such as the SuperCam2 from Voltek have a 2-way speech facility that enables you to speak with your visitor without answering the door.
1.7 Camera Viewing Quality
The resolution, size and type of camera sensor will influence the quality of the viewable image.
Resolution – This is expressed as the number of television lines (TVL) that the camera is capable of producing. The higher the TVL value the greater the resolution and hence the quality of the images. A typical entry-level camera will be around 300 TVL with higher resolution cameras having a value of 400+ TVL.
Size – A larger image sensor will give a better image definition than a smaller sensor. For example, a 1/3” image sensor will produce a better image than a 1/4 ” sensor.
Type – There are 2 types of image sensor. CMOS sensors are mass-produced and used in entry-level cameras to provide cost savings. CCD sensors are used in professional CCTV cameras and provide a higher quality image.
It is important to remember that the quality of the recorder also influences the quality of the CCTV footage. For example, if you use a high-resolution camera but a low-resolution recorder then the CCTV footage that is captured will still be of low resolution.
1.8 Single Camera or Multiple Camera Systems
Do you need to protect and view a single area or multiple areas? If you are likely to require protection of additional areas at a future date then consider buying a system that can be expanded as and when required. Voltek has a range of products that will allow you to connect and use up to 4, 8 or even 16 cameras. These include:
Switchers - These are units that enable a multi-camera system to switch between the various cameras. The switching can be done in a number of ways:
* Manually by the user
* Automatic sequential switching between cameras
* Upon detection of movement by a PIR camera.
Multiple Security CCTV cameras with Switchers The cameras are connected to the switcher and the output from the switcher can be viewed on a TV or it can be connected directly to the recording device such as the VCR or DVD recorder. CCTV switchers can typically allow connection of upto 4 or 8 cameras. The Spectrum control units from Voltek also have additional built-in functionality such as automatic video activation and time and date stamp. It is important to remember however that using a switcher will only allow you to view and record one camera at a time.
Standalone DVRs - Use of digital video recorders allows single or multi-camera systems to be viewed and / or recorded simultaneously.
Voltek supplies a range of 4, 8 and 16 channel DVRs allowing you to install a very comprehensive cctv system.
PC-Based Security Systems - These make use of a PCI card that is fitted inside your computer. They will allow connection of upto 4, 8 or 16 cameras and help turn your existing PC into a sophisticated cctv system.
2.0 Recording Options
If you want to be able to record your CCTV footage then the following factors need to be taken into account:
* Maximum length of recording time required
* Quality of recording
* Method of recording:
o Continuous
o Manual
o Event Led - i.e. when your system detects motion
* Recording Equipment
o Analogue
o Digital
* Capability for storage, retrieval and transfer of cctv footage
2.1 Domestic VCR
This is a simple and low cost option that can provide good quality footage recorded in real time. VCRs can be used to provide continuous recording of up-to 8 hours or event led recording when used in conjunction with a PIR camera and a VCR activator. When using PIR cameras to carry out event led recordings you need to consider the start-up time for the VCR. For example, if the recorder takes a few seconds to actually begin recording each time it receives the signal from the camera then the event may have elapsed before it is recorded (a person walking across the camera range may have passed the field of view before the image is captured on tape). In these situations a separate PIR detector could be used to trigger the recording and overcome this problem. The other thing to bear in mind is that you cannot set the VCR to record a TV channel whilst the camera input is selected.
2.2 Domestic DVD Recorder
These operate on a similar principle to the domestic VCR but offer the additional benefits of:
* Higher quality digital recording
* Increased storage capacity
* Improved search and retrieval capability
However, for disk only recorders the start-up time before recording actually commences is generally longer than a VCR. To overcome this it is recommended that recorders with a built-in hard drive are used
2.3 Standalone Digital Video Recorders
These are rapidly becoming the most popular method of recording CCTV footage. Essentially a DVR is a standalone piece of hardware that is designed exclusively for recording CCTV footage. It has a number ofDigital Security camera recorders clear advantages over the traditional analogue systems and these include:
* Storage Capacity – Days, weeks and even months of high resolution recording is possible through use of large capacity hard drives
* Consistent Quality Recording – No deterioration of image quality no matter how many you overwrite onto the recording device or how long you store the images for
* Viewing and Retrieval – Quick and easy access of footage due to digital format
* Transfer and Storage – The digital format allows ease of transfer and storage of footage. Transfer and storage capability is further enhanced by DVRs with built-in CD writers and USB ports.
* Remote Access – Many DVRs have the capability for remote access from anywhere in the world through use of a remote PC
* Multiplexed Recording – Capability to view and record multiple cameras simultaneously.
2.4 PCI Cards
These are digital video capture cards that can be fitted inside your existing PC to allow the connection of multiple CCTV cameras. The functionality and benefits of PCI cards is very similar to that of DVRs.
3.0 Detection
Even with systems that have a very long recording capacity, it is not always desirable to record continuously. Event-led recording is a more efficient means of capturing relevant footage and can be achieved by:
3.1 PIR Movement Detectors
Some cameras have PIR detectors built-in and for those that don’t it is possible to install a separate PIR as part of the overall system. In multiple camera systems with PIRs the footage that is being displayed on screen will automatically change to the area that has detected movement.
3.2 Video Motion Detection
This is used in digital CCTV systems and works by analysing the video signal from a camera. Changes in signal are recognised as movement and subsequently used to trigger recording if required. All Voltek digital systems allow users to mark one or more rectangular areas within the display screen and only when motion is detected within these areas will the system begin recording. Where possible, use of PIR movement detection is preferable rather than video motion detection, as it more reliable particularly for external use.
4.0 Time and Date Stamping
This feature superimposes the time and date onto your CCTV footage. Having this feature can be really useful to identify when an event occurred and was recorded, particularly if the footage is to be used for evidence purposes. For domestic systems Voltek offers a separate time and date generator that can be added to your system. The Spectrum control CCTV securyty cameras has this facility already built-in. The facility is also integral to all the Voltek range of digital CCTV systems.
5.0 Cable and Connectors
Security camera wires connectors Cameras can be connected in a variety of ways. All our domestic cameras are supplied with 20m of cable and scart and / or phono plugs to connect directly into your TV, VCR or DVD recorder. All our professional cameras are supplied with 20m of cable and BNC connectors that will plug into our range of digital recorders. The Voltek camera leads can be extended upto 100m in total by the use of appropriate extension leads. Co-axial cable with a local power supply to the camera can enable the camera to be sited upto 250m away from the monitor or recording device. Detailed information on connectors and cable for each of the Voltek cameras is available on the relevant product page on the website.
6.0 Camera Protection
If your camera is likely to be a target for vandals then consider protecting it with one of Voltel wire cages is a Security camera wire cages
must. This not only saves your Security cameras from Vandalas but protects any evidences collected during the vandal acts.
We at For your Home along with Voltek really hope the following guide will help you in selecting the perfect security cameras for Your Homes and Gardens
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