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EXCERPT page containing first few paragraphs. 2019-03-18 19:48:25
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45-megapixel Nikon D850
Sigma 24-70mm f/2.8 DG HSM Art

Examples: Alabama Hills

This page shows various examples in the Alabama Hills including panoramas up to 117 megapixels.

Images at sizes up to full camera resolution including some very large panoramas.

Only a few examples using stitching are shown, due to this being a “bad sample” as shown in the apertures series.

Dusk falls on the Alabama Hills and Mt Whitney range @ 34mm

This 4-frame 117 megapixel panoramam worked out very nicely. Shot at f/8, the lens nonetheless disappointed in some areas (not fully sharp). However, the panorama assembly process in effect picks out the sharper pixels and improves the results. So while panorama merging tends to lose a bit of micro contrast, there is some gain also. In the final result, the total detail is wonderful.

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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 28 megapixels filling up to 5K display, 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.

f8 @ 1/8 sec, ISO 31; 2019-03-07 17:45:01
[location “Alabama Hills”, altitude 4650 ft / 1417 m, 45°F / 7°C, panorama 4 frames, diffraction mitigating sharpening, USM{10,50,0}, LACA corrected]
NIKON D850 + Sigma 24-70mm f/2.8 DG HSM Art @ 34mm

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