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Sony A7R III
Sigma FE 135mm f/1.8 DG HSM Art

Aperture Series: Ducks in Dana Meadow Pond at Dusk

See also the review of the Sigma 14mm f/1.8 DG HSM Art for Canon/Nikon in diglloyd Advanced DSLR.

This distance scene evaluates the Sigma FE 135mm f/1.8 DG HSM Art for across-the-frame sharpness, penetrating power in flat light and shadows, and secondary color.

Highly optimized lenses can be very sensitive to sensor cover glass thickness, depending on optical design. The sensor cover glass thickness (total effective stack thickness) differs between, say, a Nikon D850 or Nikon D810 and a Sony A7R III.

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Diglloyd Guide to Mirrorless is by yearly subscription. Subscribe now for about 25 cents a day ($90/year).
BEST DEAL: get full access to ALL 8 PUBLICATIONS for only 68 cents a day ($249.95)!

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.
  • Save money by choosing the right lens for your needs the first time, particularly with the numerous lenses available for Sony.
  • Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning—best practices and how-to and processing parameters are discussed and shown.
  • Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops.
  • Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
  • 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.

Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Sony.

Aperture series 1.8,2.8,4,5.6,8 available in full article

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