.....Red, Green and Blue lights falling on a subject at the same point in equal amounts will produce white light. Red, Green and Blue paint mixed in equal

quality will produce Black (technically). There are subtractive colors as well as additive colors. CMYK typically refers to pigments while RGB usually refers to

Light. Tungsten light sources are missing the Blue spectrum. Fourescent light is missing Magenta. B/W Papers do not react to Red lights, but Blue and Green.

A method called split contrast printing is termed for a tight control process of such papers. Magenta and Yellow filters aid the process of exposing B/W paper.

ALL Digital cameras (see) in B/W but there are filters over the chip and which ever one burns the brightest gets the preference in processing.

When white light hits a red, blue or green filter, the chip will see the same flow of light through each and signal that the color is indeed white.

If there is a red flavor in the mix, it will go through the red filter stronger, thus giving red the preference. Then the computer in the camera will process

the area to be redish... The same applies for any other color or mix of such. The bit depth of the camera then becomes so important,

since true colors are matched with better bit depth. The price reflects this somewhat.

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