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EXCERPT page containing first few paragraphs. 2021-12-08 02:03:59

60MP Sony A7R IV
Sigma FE 85mm f/1.4 DG DN Art

Sigma 85mm f/1.4 DG DN Art: Conclusions

The about $1199 Sigma 85mm f/1.4 DG DN Art is a strong performer in most ways, an excellent value in its price range and a strong performer even in an absolute sense in just about all areas. And it offers outstanding compactness and weight for its f/1.4 speed.

Many users are going to love the Sigma FE 85/1.4 because they’ll utilize distortion correction. Either knowingly and not minding given the usage scenarios, or unknowingly and none the wiser.

But the level of pincushion distortion that all but mandates distortion correction means that its claimed sharpness is not actually the best it can be. And the loss of sharpness is greatest in the central area, the most important of the frame. For anyone looking for top notch resolving power, a lens that demands distortion correction is not at all an ideal choice.

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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.

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