Get Zeiss Touit 50mm at B&H Photo.
The Zeiss Touit 50mm f/2.8M is nominally an APS-C lens, but like all lenses it “covers” more than that size.
I assess the Touit 50/2.8 at crop factors of 1.1X, 1.2X, 1.3X and 1.53X (APS-C) including the image quality at those crop factors. The results are highly instructive and eminently useful.
Includes HD and UltraHD images from f/2.8 through f/11 for all the crop sizes, as well as crops showing image quality.