I found this site while looking for info on 35mm sized sensors. (See the post below). I don’t know if I agree with his argument. The SLR lenses if have for my camera are designed to project an in-focus image onto the film plane of my camera, whether analog or digital. if the silver halide crystals or digital pixels capture that information with the desired detail then I have captured my image.
I know that analog film can capture a much denser amount of light than a digital sensor. The example used inthe article is that a 35mm neagtive is equivalent to 22Mpixels, which is equivalent to 25.5K P/sq mm.
Hmm. That’s pretty close to the 20D and XT densities. Of course those chips have much less area than a 35 mm frame.
I found it an interesting article to read. Beware of people who warn of pipe dreams.