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EXCERPT page containing first few paragraphs. 2023-03-29 10:26:30

45-megapixel Nikon D850
Sigma 70-200mm f/2.8 DG OS HSM Sports

Examples: Mt Whitney and Alabama Hills, Pre-Dawn to Early Sun

These examples of Mt Whitney are of a series from pre-sunrise to post-sunrise using the Sigma 70-200mm f/2.8 DG OS HSM Sports. Conclusions follow.

Presented at up to full camera resolution (up to 240 megapixels size for panoramas).

These images are arranged in chronological order, which is fun as it shows the progression of lighting from before to after sunrise.

First light on Mt Whitney Range from Alabama Hills @ 135mm

This 10-frame panorama was shot at f/8 which deals with the soft edge of the Sigma 70-200mm f/2.8 DG OS HSM Sport. Once assembled as a pano, it works just fine.

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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.

First light on Mt Whitney Range from Alabama Hills
f8 @ 8.0 sec panorama 10 frames, ISO 64; 2019-03-08 05:49:47
NIKON D850 + Sigma 70-200mm f/2.8 DG OS HSM Sports @ 135mm
ENV: Alabama Hills, altitude 4600 ft / 1402 m, 40°F / 4°C
RAW: LACA corrected

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