The pixel density on the Sony NEX-7 and the Nikon D7100 is equivalent to 56 megapixels if scaled to a full frame sensor.
As with the Zeiss 135mm f/2 APO-Sonnar, one wonders what the future potential image quality is once something in the 56 megapixels range arrives in a full-frame DSLR.
Retina-grade images from f/2 - f/22 are presented, along with the usual generously sized actual pixels crops along with included MTF discussion relative to the results.
Murray O writes:
The absolute requirement of precision focus is a recurring conclusion in your evaluations of the high-MP sensors, yet neither Nikon or Canon appear the slightest bit inclined to include focus peaking like Leica and Sony whilst in the latest FF Canikon bodies, neither offer optional screens optimized for manual focus nor designs accommodating 3rd party offerings. The Zeiss website even urges use of elusive MF-optimized screens. LV isn't always practicable nor ideal in may of the new bodies. Is there any relief in the offing that you may know of?
DIGLLOYD: The absence of an EVF option for Nikon and Canon DSLRs is simply design insanity in the present context of high resolution digital; optical DSLR viewfinders are good for composing, but hit or miss anachronisms for manual focusing due to the extremely poor suitability of the no-choice autofocus oriented focusing screens in the D800 and Canon 5D Mark III.