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Zeiss ZM 35mm f/2 Biogon
Sony Alpha A6000

Aperture Series: Pellegrino Bottles

Here we examine the performance of the Sony A6000 sensor at ISO 100 with a high performance rangefinder lens, the Zeiss ZM 35mm f/2 Biogon, mounted with a Novoflex Adapter for Leica M Lens to Sony NEX.

This page is not a lens test; rather, we’re looking for camera sensor behavior under the best of conditions as well as where loss of quality beings due to diffraction. Accordingly, the series starts at f/4.

Lens performance issues

The 35/2 Biogon has significant aberrations at f/2, but world-class MTF by f/4. It has a flat field (minimal field curvature), near-zero distortion and world-class MTF by f/4 even to the edge of a full-frame sensor. It also has superb ergonomics, and mates very nicely to the A6000. Anyone looking for a compact Leica-like system at a tiny fraction of the cost with image quality no less good might consider this combination.

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Diglloyd Guide to Mirrorless is by yearly subscription. Subscribe now for about 25 cents a day ($90/year).
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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.
  • 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 28 megapixels filling up to 5K display, 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 4, 5.6, 8, 11, 16 available in full article

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