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Sigma 50mm f/1/4 DG HSM Art
Sigma sd Quattro-H

DNG vs X3F (Dolls, Daylight)

Sigma sd Quattro firmware 1.01. Shot with Sigma 50mm f/1.4 DG HSM Art.

This page assesses DNG processed via Adobe Camera Raw vs X3F processed with Sigma Photo Pro 6.5.0.

Beyond the look of the output files, there is the issue of the doubling of file size with DNG format.

Dolls

Exposure: optimal ETTR exposure at ISO 100; both images pulled 1/2 stop. The Sigma sd Quattro has a very misleading “blinkies” display after making the shot that tends to encourage at least a stop of underexposure, leading to greatly increased noise.

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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.

Variants X3F,DNG available in full article
f6.3 @ 0.6 sec, ISO 100; 2017-02-03 10:40:23
sd Quattro H + lensNA @ 66mm equiv (50mm)

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