Guys, new insight:
The differences were due to different focussing!
The K-3's (first) image is sharper in the center (which most of us saw),
But the K-5iis' (second) Image is sharper near the edges! (so
pTom and others are right as well).
Bottomline:
- The lens used has a noticable curvature of field, even stronger than the depth of field.
- the cameras' AF calibrations were calibrated (or not-yet-calibrated) differently regarding the lens used.
Bottomline: The comparison appears pretty meaningless now.
Maybe it could be repeated with the lens focussed by one camera, then both cameras are switched to MF, and the focusing ring is fixed with tape? But this could be meaningless as well, unless there's a guarantee that the sensors have the exact same distance from the lens mount.
Maybe just using contrast-AF-peaking next time would be a better idea.
Last edited by Frater; 11-04-2013 at 04:55 PM.