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EXCERPT page containing first few paragraphs. 2022-01-23 00:22:28

Sony A7R II
Sony FE 85mm f/1.4 GM

Aperture Series: Running Creek

This series takes a critical look at the performance of the Sony 85mm f/1.4 GM. In particular, the specular highlights on the water reveal the color correction and point spread function characteristics of the 85/1.4 GM.

Running Creek

Adobe Camera Raw 9.5 (585). View ACR Settings. Camera Profile = Adobe Standard.

Every aperture is different due to the fast-moving water but f/4.5 is particularly lively and full of motion and reflection. Contrast is very good at f/1.4, but improves considerably at f/2 and again at f/2.8.

Wide open, secondary chromatic aberrations are readily visible, namely violet halos on high contrast specular areas and substantial magenta/green blurs on out of focus areas—in terms of color correction this is not even in the same league as the Zeiss Otus 85mm f/1.4 APO-Planar. In outer zones, the point spread function trends to “bird”s wings” coma-like points, a smearing which is unlikely to work well for astrophotography.

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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.

Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.

  • Make better images by learning how to get the best results right away. For example, the best way to set up your Sony camera.
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  • Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
  • Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.

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Aperture series 1.4,2,2.8,4.5,6.3,9,13 available in full article

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