Originally posted by Clavius Wouldn't people with a K3 just shoot their K3 instead of the crop mode of ANY FF camera?
Guess would have a better SNR and DR, though, and would have a FF with it's "advantages" when using FF lenses. Unlikely, I appreciate.
---------- Post added 03-23-15 at 04:39 PM ----------
Just calculated the pixel sizes for K-3 D8100 and 645Z (24, 36, 50 mp approx).
Approx figures:
K-3 - 0.0039 mm
D810 - 0.0049 mm
645Z - 0.0053 mm
So a 24mp to 36mp sensor gain brings a greater increase in photon gathering capacity for a 36mp FF Pentax (=D810 size), than is gained from a D810 to 645Z. I found this interesting when considering how a FF 36mp might perform. I used a 645Z briefly at the weekend and was impressed by the improved quality of the noise. Looking at these approx figures, a 36mp Pentax might be a noticeable improvement on the K-3 in this area.
Of course I may have got my maths wrong ...