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42MP Sony A7R III
Zeiss Batis 18mm f/2.8 Distagon

Aperture Series: Upper Conness Lake

This distant landscape scene evaluates sharpness across the field as well as secondary color correction.

Upper Conness Lake

Adobe Camera Raw 10.5.0.1001: view ACR settings. Camera Profile = Adobe Color. Lateral chromatic aberration corrected via built-in setting, enforced by ACR. Diffraction-mitigating sharpening for f/11.

Overall, the Zeiss Batis 18mm f/2/8 delivers very pleasing image with high overall contrast and excellent color saturation.

A weakness is readily seen: violet fringing at wider apertures on the out of focus specular highlights on the surface of the lake. This is mostly gone by f/4.5 and of course the demands are extreme with these pure white highlights.

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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 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 2.8,4.5,6.3,9,11 available in full article

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