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EXCERPT page containing first few paragraphs. 2021-10-25 06:51:41

45-megapixel Nikon D850
Sigma 28mm f/1.4 DG HSM Art

Aperture Series: View to Mt Whitney Peaks From Alabama Hills, Very Late Dusk

This far distance series evaluates lens performance from f/1.4 through f/5.6 across the frame, giving an excellent look at just how good the Sigma 28mm f/1.4 DG HSM Art is.

Uniform sharpness is very challenging for a lens for far distance scenes like this, so that precise focus is critical. This series was focused perfectly so as to extract maximum performance across the field so this series represents an optimal performance with the Sigma 28mm f/1.4 DG HSM Art.

Images at sizes up to full camera resolution.

View of Peaks near Mt Whitney, Very Late Dusk

Adobe Camera Raw view ACR settings. Camera Profile=Adobe Color. Lens correction for lateral chromatic aberration.

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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.

Aperture series 1.4,2.8,4,5.6 available in full article

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