Day/night cameras combine the versatility and improved chances of identification of a colour camera and the low light, IR performance of a monochrome camera.
All switching from colour to monochrome and vice versa is done automatically with reference to the AGC within the camera; or an interface switch.
The back focus adjustment tends to be more critical on these types of cameras, as they have to take in natural IR light.
Most day/night cameras work off a single CCD chip. With different types of material reflecting different amounts of infrared light (natural materials absorb more IR than man-made ones) a distortion of some colours may occur. Siting of the cameras needs to be considered.
If infrared light at night is not being used, day/night cameras with IR/cut filters can be used to overcome this colour distortion.
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