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EXCERPT page containing first few paragraphs. 2021-10-16 21:05:24

Canon 16-35mm f/4L IS

Aperture Series @ 16mm: Sunstars and Flares (Canon 5DM3)

Sunstars can be quite appealing, but how much flare accompanies shooting into the sun is also an issue. Here, both issues are studied along with sharpness.

Sunstar @ 16mm

Considerable contrast control used here for faux HDR.
Adobe Camera Raw 8.5 (236): ACR settings.

The 18-point sunstar begins to develop at f/5.6, is well defined at f/8, very nice at f/11 and striking at f/16.

The ghosting flares of various kinds are not so appealing. The lens was brand-new and spotless, so the flares cannot be blamed on any dirt or dust on the front element (and no filter used). Seen at lower right are various rainbow ghosts, and various other ghosts near the sun area. All the flare become increasingly defined and prominent with stopping down, starting out diffuse.

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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 4, 5.6, 8, 11, 16 available in full article

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