Rev Den said:
Keep in mind that a security camera is usally using supplimental light from infrared LEDs, this is NOT night vision. A true night vision system will use a light amplifier tube to increase the images using the ambiant light available, the system in the video appers to be a heat sensing camera.
HTH
Rev
Ayuh - and there are two basic types of "night vision" -
a) Infrared (commonly listed as "PIR" - Passive InfraRed.) This reacts to heat given off by living things, or retained by objects during the day. PIR can work in total darkness, but doesn't work if everything is the same temperature.
b) Starlight (or "light amplification." This doesn't cue on heat - rather, it amplifies the ambient light several thousand times. While it will work to provide detail when everything is the same temperature, it does require that there be
some light present. Better models will work with a starlit night on a new moon, but that still won't do you any good in an indoor or underground blackout.
There is, as Den mentioned, a variation on night vision that uses an infrared camera and some sort of illuminator (LED or IR-filtered flashlight,) and therefore does not depend upon heat, and
will serve in total darkness. However, heat gradients are not as obvious as they are with PIR (FLIR - Forward Looking InfraRed - is a variation on this latter, but it's usually set up to work either with or without the illuminator, depending upon what the operator wants.)
For vehicle mounting in deer country, it would probably be best to use some variation on PIR, since it will make the heat gradient of a deer more obvious, and it won't get washed out by the IR illuminator. That's the variation I'd probably go for, given a choice. Use "starlight" for a vision amplifier in low light conditions.
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