08-08-2014, 08:41 AM
You will never get that "pixel sharpness" anyway, as just about with any lens you put on it you will already get hit by diffraction... I would not worry too much, therefore, about "peak performance".
Say you get the best results at f5.6, due to diffraction, on APS-C. Or f8 on FF. Then you will get the best results at f1.8 with the Pentax Q (if the lenses would exist). Just about any lens you put on there will add quite a bit of diffraction softening, due to the very small pixel pitch.
Say you get the best results at f5.6, due to diffraction, on APS-C. Or f8 on FF. Then you will get the best results at f1.8 with the Pentax Q (if the lenses would exist). Just about any lens you put on there will add quite a bit of diffraction softening, due to the very small pixel pitch.