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EXCERPT page containing first few paragraphs. 2019-09-18 11:57:31
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Zeiss Touit 50mm f/2.8M
(Sony E mount)

Aperture Series: Boulders Up Creek, Depth of Field (Sony A7R, APS-C)

Shot with the 36-megapixel Sony A7R in APS-C crop mode.

A 50mm lens can show limited depth of field (real vs theoretical) on real-world scenes, whereas a well-corrected lens delivers depth of field closer to the theoretical calculations.

This scene was chosen for a deep near to far perspective in which both foreground and background are important, to see how well depth of field gains proceed. Demands on a higher density sensor would be higher (e.g., the 24MP APS-C sensor of the Sony A6000), but no different in relative performance than here.

Exposure time

The shutter vibration of the Sony A7R should not have been a factor here, even with the camera in portrait orientation.

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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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Aperture series 2.8, 4, 5.6, 8, 11, 14 available in full article

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