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EXCERPT page containing first few paragraphs. 2023-03-29 09:22:41

60MP Sony A7R IV

3-Way Shootout: Crooked Creek Canyon View to White Mountain Peak

This 3-way shootout assesses three top 85mm lenses on the Sony A7R IV for sharpness across the frame and near to far, focus shift, field curvature, color correction and distortion.

With Sigma claiming de facto top honors in its marketing/sales pitch, what’s the performance reality at wider apertures, and stopped down a few stops?

Includes images from f/1.4 through f/8 at up to full camera resolution, plus crops.

Comparing lenses on a 60MP camera is challenging—even just matching focus is all but impossible in the field (forgetting about field curvature and focus shift and other oddball behaviors!)—it’s about the zone of focus, not matching a very small area. But I took considerable care, and all three lenses have focus landing where intended (far distance) but other factors dominate. The commentary takes such things into account.

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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.

   Sigma FE 85mm f/1.4 DG DN Art, Zeiss Loxia 85mm f/2.4, Zeiss Batis 85mm f/1.8 Sonnar

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