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Zeiss Batis 135mm f/2.8 APO-Sonnar

MTF for Zeiss Batis 135/2.8 APO-Sonnar

Wide open at f/2.8, MTF is outstanding, among the best lenses available and showing a higher and flatter (better) MTF curve than the Zeiss Milvus 135mm f/2.

The Batis 135/2.8 is nearly at optimal performance wide open! Going to f/4 makes a small improvement in edge to corner areas with f/5.6 adding no benefit.

At f/8, micro contrast (lowest pair of lines) begins to drop due to diffraction. At f/11, the curves are all flatted to nearly straight lines and drop substantially, indicating performance limited by diffraction.

At f/16, performance is massively degraded by diffraction; avoid f/16.

There is no indication of any focus shift. This is a superlative performance that makes it a reference lens for this focal length range.

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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.
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  • 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 2.8,4,5.6,8,11,16 available in full article
MTF for Zeiss Batis 135mm f/2.8

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