Quote:
Originally Posted by Sil_liS
In the RGB system you need bandpass filters which are easy to make. But how do you suppose the filters for the CMY system should be?
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I take the point about the closeness of the 'red' and 'green' cone sensitivity, but I don't think it's actually a problem.
We want the cyan (& and yellow and the magenta) to pass as much light as possible. So we just take the ranges passed by RGB filters, and make filters that pass combined spectrums.
Say that Blue passes 400 to 490, and Green passes 490 to 560 and red passes 560 to 700.
Cyan would pass 400 to 560, Yellow would pass 490 to 700 and Magenta would pass 400 to 490 and 560 to 700.
Would it work? I don't know - I haven't tried it! But it seems plausible.