I\'ve been pretty happy with the Nikon on the a7R.....but curiosity made me keep my eye open for the Zeiss. Anyway, I was able to snag one at a relatively decent price.
Anyway, here\'s a comparison of the 2. Sorry for the contrasty lighting, it was really bright here yesterday.
Both shot at 1/80th @ f/11 (ISO 100), on a tripod. Processed through Photo Ninja, using identical sharpening/detail settings. Color was tweaked a little bit to try to match the two.