I agree - you can always get a hue introduced from lighting conditions, lens CA etc. No doubt!
Yet, the answer to the specific question really should have been "within your specific setup, you can actually skip the color interpolation / demosaicing step".
I say this because no matter how good your interpolation process (demosaic) is, it is an interpolation after all, it "guesses" (mathematically calculates) values that aren't really there. With the specific, narrow use case of shooting BW objects (ideally in controlled lighting conditions), you would most likely get a better BW result by skipping the color interpolation.
(I have done this and can say from experience that it does give you more fine detail than any RGB interpolation I have tried ;) )
I agree - you can always get a hue introduced from lighting conditions, lens CA etc. No doubt!
Yet, the answer to the specific question really should have been "within your specific setup, you can actually skip the color interpolation / demosaicing step".
I say this because no matter how good your interpolation process (demosaic) is, it is an interpolation after all, it "guesses" (mathematically calculates) values that aren't really there. With the specific, narrow use case of shooting BW objects (ideally in controlled lighting conditions), you would most likely get a better BW result by skipping the color interpolation.
(I have done this and can say from experience that it does give you more fine detail than any RGB interpolation I have tried ;) )
Mact