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Nikon D850
Sigma 135mm f/1.8 DG HSM Art

Examples: Eastern Sierra (Nikon D850)

Ad-hoc examples from the Eastern Sierra, most from the Hoover Wilderness area just east of Yosemite National Park.

Moon over mountain ridge

The image is razor sharp, except for the left side, which is weak. Whether this the lens or the camera (sensor/flange parallelism) is hard to say, but the same left-side weakness is seen in View Over Conness Creek Drainage to Saddlebag Lake. For f/5.6 not to achieve full sharpness on one side is a grievous error.

Contrast is outstanding.

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Diglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.

Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang.

  • Make better images by learning how to get the best results right away.
  • Save money by choosing the right lens for your needs the first time, particularly some of the new Sigma Art lenses vs Nikon and Canon.
  • Workflow discusses image organization, raw conversion and post processing. Many examples show processing parameters for direct insight into how the image was converted.
  • Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops [past 2 years or so].
  • 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 Nikon or on Canon or on Pentax.

f5.6 @ 1/250 sec, ISO 31; 2017-10-26 15:17:12
NIKON D850 + Sigma 135mm f/1.8 DG HSM Art

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