What Makes Night Vision Cameras Work?

When we think about photography or recording with athat most people would consider to be totally dark.
video camera we usually are considering doing it whenThere are two different methods that night vision
it is light. For most of us filming in the dark is not a thingcameras use. The first type uses all available light, and
we would have considered until today when it isalso some infrared light from the lower end of the
becoming a viable option with the new night visionspectrum that we cannot see. That is why these
camcorders and cameras. There are many situationstypes of cameras are called 'infrared'.
where you might want to be able to take a picture orThe sensors are much more sensitive than our eyes
film in the dark or when there is not enough light for aare, and it is amazing the images that these cameras
regular camera. Those who camp or hunt have manycan record. The second type uses thermal imaging.
situations where night vision technology would beThis type of sensor records the heat given off by a
especially useful.body or an object. These heat readings are converted
We all have heard about the military's use of nightin a thermal scale to images that we can comprehend.
vision equipment but have always thought that it is outBoth types of imaging have many different uses and
of reach for the average person. New technology andapplications. Night vision is now built in to not only
mass production has now put this technology in thecameras and camcorders, but also to binoculars, gun
price range that anyone can afford.and rifle scopes and night vision goggles. The cost of
Understanding how night vision works requires that wethese items varies, but consumer priced models that
have a definition of what seeing in the dark means.have excellent performance are now available for all
What we call dark is a condition where we as humansthese types of low light and no light vision equipment.
have difficulty seeing. But many animals can see muchAnd there are also many types of accessories such
better in the 'dark'. That is because there is alwaysas infrared floodlights and illuminators that can be used
some light at all times of day and night. It might comein addition to your equipment to add more 'light' but still
from the moon and stars, or from distant street lampskeeps everyone else in the dark.
or other man made sources, but the problem is thatIf you are thinking about getting your feet wet with a
our eyes can't gather enough of the light rays to benight vision camcorder or camera, it looks like the time
useful to us like an animal can.is finally here where you can do it without breaking the
While animals eyes have evolved to have better visionbank while getting excellent quality results.
at night, we can use technology to see in conditions