Does this mean that the 1Ds is more 'forgivable' for lense quality since it has full size sensor? (not mentioning wide angle lenses with the problem of the direction of light falling on the sensor/film)
Yes. OTOH, the 1Ds has about twice the pixels of e.g. a 10D. So the actual size of the pixels is not all that much different. The smaller the physical size of the pixels, the more you see the quality of the lens. A 1Ds taking images with the same number of pixels than a 10D (around 6 MP, don't know if the 1Ds can do that) would be more forgivable than a 10D, because of the bigger size of those pixels.
Or is the resolution of the pixels smaller than the resolution of film? As far As I understand the pixelsize of point and shoot is much smaller dan DSRL, this giving the advantage of....?
It gives the advantage of higher signal/noise ratio. Capturing the same scene with both sensors, the DSLR will capture more photons per pixel because of it's bigger pixels, resulting in a "stronger" signal while noise remains basically at the same level.
Or, as another use you can make of the bigger pixel advantage, you can get the same quality image as with a P&S at a higher ISO setting.
Thomas Bantel
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