Say you have a light source that produces light in the 700-1000 nm spectrum (Infrared), you use it in a dark room, and record with an infrared camera sensitive to the same spectrum. The visible light spectrum is 400 nm (violet) - 700 nm (red). Therefore if you translate the recording into 700 nm = violet .. 1000 nm = red, then how realistic the colors you obtain will be? I have seen only grey shades on active infrared pictures and I wonder how they would look in colors. Has anyone tried that? Even if the resulting colors would be totally unrealistic, I think it's still something very interesting to contemplate. The question came to me after reading http://en.wikipedia.org/wiki/Night_vision and seeing the pictures http://en.wikipedia.org/wiki/File:Extreme-CCTV-Active-Infrared-Night-Vision.jpg [Broken] http://en.wikipedia.org/wiki/File:Active-Infrared-Night-Vision.jpg If the colors don't translate weel from 700 nm = violet to 1000 nm = red maybe they translate better from 700 nm = red to 1000 nm = violet or there can be many other forms of translating the colors. Maybe one such translation can produce the real colors?