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Canon 5Ds R
Canon EF 11-24mm f/4L USM

Color Fringing in Blue Light: Remarkable Gains From Correction (5DS R)

The Canon 11-24mm f/4L USM is a highly corrected lens but on the 50-megapixel Canon 5DS R there is red/cyan color fringing as shown in the Color Fringing, Uncorrected and Corrected, Optical Misalignment?

Much less common—indeed rare in my experience—is the presence of lateral chromatic aberration of the blue/yellow type, as is shown in this example—usually blue halo effects are longitudinal chromatic aberration, which disappears quickly with stopping down and not often found with an f/4 lens. Not so here where the color fringing is blue and of the lateral type—it does not improve with stopping down.

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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.

f9 @ 1/25 sec, ISO 100; 2016-12-28 09:11:01
Canon EOS 5DS R + Canon EF 11-24mm f/4L @ 15mm

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