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60MP Sony A7R IV
Sigma 24-70mm f/2.8 DG DN Art

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Aperture Series @30mm: Mining Cylinder

This series from f/2.8 to f/11 evaluates the Sigma 24-70mm f/2.8 DG DN Art on a near to far scene, looking primarily at sharpness. Includes a 4-frame focus stack at f/8 as well as crops.

Includes images up to full camera resolution.

Mining Cylinder @ 30mm

Adobe Camera Raw 12.2.0.386. View ACR Settings. Camera Profile = Adobe Color. Color fringing corrected as per required EXIF flag but it is not needed. Slightly more sharpening for f/9 and f/11 than the other apertures.

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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 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 2.8,4.5,6.3,8.04,9,11 available in full article

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