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Sigma FE 85mm f/1.4 DG DN Art Aperture Series: Dolls

This series is at close range at a reproduction ratio of 1:14.7 (measured it). It evaluates all aspect of lens performance including distortion correction vs without.

Sigma FE 85mm f/1.4 DG DN Art Aperture Series: Dolls

Includes images from f/1.4 through f/11 plus crops and with and without distortion correction so that readers can see the effects across the entire aperture range.

Reader James K suggests that my loaner sample of the Sigma FE 85mm f/1.4 DG DN Art could be underperforming. Though I have not detected any obvious issues that would indicate lens skew, I also have been homebound due to horrible smoke, so I have no distance shots which are the easiest way to see it.

It is perfectly possible that this sample is at issue—I had sample-quality issues (lens skew and underperformance in general) with the Sigma FE 35mm f/1.2 DG DN Art. I have requested a 2nd sample, but do not yet know if I will get one. Sigma’s claims of MTF testing prior to shipment for quality control are IMO totally unsatisfactory, but that’s true of all brands these days.

A superb optical design means nothing if it cannot be built to strict tolerances!

Update Sept 17: a 2nd sample is definitely better and focuses spot-on as well. The first sample simply never focuses quite right with AF.

Cropped image
f4 @ 1/4 sec pixel shift, ISO 100; 2020-09-11 17:48:34
Sony A7R IV + Sigma FE 85mm f/1.4 DG DN Art
RAW: LACA corrected, +40 Whites, +15 Clarity

[low-res image for bot]
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