[Brightcolours]

[quote name='Lomskij' timestamp='1286179445' post='3471']

Right, right. The problem I see here is that you rather conveniently put an '=' sign between luminance data and image sharpness. To my understanding, it's 100% true in only one possible scenario - when someone shoots a pure B/W scene. Because as soon as you introduce any details based on colour transition (i.e. wavelength change instead of brightness change), demosaicing guesswork kicks in and resolution will degrade. I guess pure B/W scenes (the best case scenario for Bayer) occur naturally about as frequent as my "caricature" worst-case red-and-blue scenario, so if we assume that typical scene is somewhere in the middle, Bayer normally will have worse sharpness than Foveon. With AA filter or without.



P.s. I think we're back to square one here - I believe at the beginning of the conversation I agreed that Bayer would be equally sharp if it's B/W.

[/quote]

Your example (pure red and pure blue next to eachother) was silly. That was my point. It is not true that only black and white images show more defined pixels, and colour images do not.



Here the Nikon D200 as example:

http://www.maxmax.com/nikon_d200hr.htm