Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2022-08-19 07:05:34


See also the examples on the Distortion and Flare and Comparison pages.

Sensor size

Some of the examples on this page were taken with the Canon EOS 1D Mark III, a 10.1-megapixel camera with a 1.3X field-of-view crop sensor ( 1.3X Sensor Crop ). Others were taken with the full-frame 21.1-megapixel Canon EOS 1Ds Mark III ( ).

Leaves in stream [Canon 1D Mark III] 1.3X Sensor Crop

Stopping down to f/11 or f/16 is needed to pull the corner sharpness into bounds due to curvature of field. Unfortunately, stopping down past f/8 drops image contrast just a bit, and this can be seen in the areas that are already optimal at f/8. See also Diffraction at

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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 8, 11 available in full article

EOS 1D Mark III, ISO 50, 0.5 sec @ f/8 <=> f/11

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