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EXCERPT page containing first few paragraphs. 2021-09-26 05:09:44

Sony A7 and
Novoflex lens adapter
Zeiss Otus 55mm f/1.4 APO-Distagon

Aperture Series: Red Barn (Sony A7R)

The 55/1.4 APO-Distagon used here is a production lens, author’s personal sample. Its MTF characteristics are known-good to the author by MTF tests.

This comparison is about sharpness but emphasizing the field curvature characteristics of the 55/1.4 APO-Distagon at infinity focus. Field curvature behavior might vary at close range.


Sony A7R Lens Comp has no effect on adapted lenses, hence vignetting characteristics are uncorrected. A polarizer was used, but might not have been at full polarization effect.

The rig consistent of the Novoflex Nikon to NEX lens adapter with ASTAT tripod foot, with camera mounted in a Really Right Stuff MPR CL II rail. At the front of the rail, a padded neoprene material was used to gently support the lens under the lens hood. This seemed quit stable and well balanced, as determined by tapping the lens to look for movement.

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