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Performance on 56-megapixel DSLR Pixel Density + MTF (Nikon D7100 + Sony NEX-7, Blue Doll)
This example used the Nikon D7100, which utilizes a 24-megapixel APS-C sensor which does not have an anti-aliasing filter, as well as the Sony NEX-7, which also has a 24-megapixel APS-C sensor, apparently with a weak anti-aliasing filter.
Pixel density of either camera scaled to full frame would be 56.0 megapixels. Thus this example is a reasonabl proxy (perhaps excluding the extreme corners) of what one might be able to resolve with a full-frame 56MP DSLR using the 50mm f/2 Makro-Planar.
Sharpening
Two-pass sharpening was used here to counteract diffraction. Apertures f/2 - f/8 received the same level of sharpening, with apertures f/11 - f/22 receiving increased sharpening as per the technique details in Making Sharp Images in Mitigating Micro Contrast Losses from Diffraction Blur.
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Diglloyd Guide to Zeiss offers comprehensive integrated coverage of Zeiss DSLR lenses for Canon and Nikon. Nearly a decade in the making, it covers everything you need to know for every lens in the ZF.2, ZE, Milvus and Otus lines. Guide to Mirrorless and Zeiss ZM rangefinder lenses in Guide to Leica.
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