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Sony A7R
Leica 75mm f/2 APO-Summicron-M ASPH

Aperture Series: Pescadero Creek Redwoods (Sony A7R)

The Sony A7R is a 36-megapixel mirrorless camera with a full-frame sensor incorporating micro lenses, which might be hoped to allay the ray angle issues that lead to color shading and excessive vignetting and loss of off-center sharpness.

This distance scene was chose to show definitively whether the 75mm f/2 APO-Summicron-M performance is solid on the Sony A7R sensor. The Novoflex Leica M to Sony NEX lens adapter was used. This intent here is to document the camera-specific lens behavior. Accordingly, the vignetting and color shading and contrast and highlights have not been adjusted for the series, though they are ripe for such adjustment, and one adjusted f/11 frame is included.

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Diglloyd Guide to LEICA contains in-depth coverage of Leica M system cameras and lenses, with additional coverage of Leica M Monochrom, Leica Q.

Special emphasis is placed on Leica M lenses and certain Zeiss ZM lenses.

  • Make better images by learning how to get the best results right away.
  • Save money by choosing the right lens for your needs the first time, particularly the Summilux/Summicron/Elmarit choice and/or Zeiss ZM.
  • Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning. 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 [past 2 years or so].
  • 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.

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Aperture series 2, 2.8, 4, 5.6, 8, 11 available in full article

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