03-24-2013, 01:59 AM
Quote:Is it because of different AA filter? The crop of D800 is sharper than the D7000 but they should be the same.
Well, we tested this on the D3x and D7000. The D7000 has a higher pixel density than the D3x.
We were also surprised about this but the the center to corner resolution is not necessarily a continuously decreasing curve. We tested a couple of lenses where the extreme corners recovered again just to point to an obvious finding.
It can also have something to do with the sensor design. e.g Sony's 16mp APS-C sensor is supposed to have less corner smearing compared to the 24mp APS-C variant - probably due to the different micro-lenses in front of the photo-diodes and the characteristic of the photo-diodes themselves (their distance to the surface of the sensor).