This aperture series evaluates general lens performance at a scale of about 1:10.
Focusing was a joy— in magnified Live View on the 36-megapixel Nikon D800E, there was absolutely no sign of any veiling haze. The image is very high contrast and remarkably clear wide open at ƒ/2.
The camera was tilted down to the subject so that the nominal plane of focus cuts through the eyes of the central doll into the flag in the background.
Aside from the natural and expected depth of field and vignetting changes with stopping down, what one might observe is a remarkable consistency across the aperture range.
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Since 2007, Diglloyd Guide to Zeiss is the authoritative reference and review for all of the Zeiss ZF.2 (for Nikon) and Zeiss ZE (for Canon) DSLR lenses, including the Otus line.
It includes hundreds of pages of exclusive coverage and high resolution Retina-grade examples, in-depth analysis of sharpness and contrast, color, bokeh, vignetting, distortion, MTF, and flare, and recommendations and practical usage tips.