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Zeiss Otus 100mm f/1.4 APO-Sonnar: Focus Shift

Update June 29: I've added some tips and discussion.

Cognitive commitments affect us all and I am no exception, though I push back pretty hard on my own assumptions, a habit developed by years of coding and for the past decade, gear testing.

Having tested all previous Zeiss Otus lenses in depth and finding them remarkably excellent in being free of focus shift in central areas (edges do have some), my initial tests of the Zeiss Otus 100mm f/1.4 APO-Sonnar were not up to snuff in sniffing out focus shift.

Zeiss Otus 100mm f/1.4 APO-Sonnar about $4990

It was 187MP Multi-Shot High-Res mode that had me scratching my head in puzzlement, as focus shift altered more than one field series to a degree not to my liking. I have now rectified that oversight with proofs on the Nikon D850 (only 45 megapixels).

In diglloyd Zeiss:

Zeiss Otus 100mm f/1.4 APO-Sonnar: Focus Shift

I’ll be following up with a more interesting field example.

f1.4 @ 1/1600 sec, ISO 31; 2019-06-28 17:42:18
NIKON D850 + Zeiss Otus 100mm f/1.4 APO-Sonnar

[low-res image for bot]
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