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EXCERPT page containing first few paragraphs. 2019-09-22 14:33:00
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Sony A7R III
Sigma 14-24mm f/2.8 DG DN Art

Aperture Series @ 14mm: Teak Bench Closeup

This series from f/2.8 through f/11 evaluates the Sigma 14-24mm f/2.8 DG DN Art at 14mm for sharpness at close range as well as focus shift, bokeh and secondary color. Shot in pixel shift mode for absolute highest sharpness. Lens skew is demonstrated also.

This is an important series to read/understand for using the Sigma 14-24 at 14mm for how it behaves for respect to focus shift.

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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 2.8,4,5.6,8,11 available in full article
f2.8 @ 1/13 sec pixel shift, ISO 100; 2019-09-03 19:25:51
Sony A7R III + Sigma 14-24mm f/2.8 DG DN Art @ 14mm RAW: LACA corrected

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