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Showing posts from July, 2010

Day / Night Cameras - The Best of Both Worlds

A Quick Background

Color and black and white cameras both have their unique strengths for surveillance needs. Color cameras have the obvious benefit of providing the detail of…color. Being able to record the color of a suspect’s skin tone, clothing, or vehicle is beyond import – it can truly make the difference between solving the crime and the bad guy going free. In order for color cameras to accurately produce colors, during manufacturing an IR cut filter is placed over the imager. The cut filter allows the camera to only see light in the visible spectrum (400nm to 750nm). Consequently, color cameras fall short when it comes to producing usable images in low light scenarios.

Conversely, black and white cameras don’t use an IR cut filter because they do not need to see color. With the absence of this filter, B&W cameras can make use of other light frequencies – such as infrared – which come from a variety of sources, including the sun, fluorescent lights, incandescent lights and …