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EXCERPT page containing first few paragraphs. 2022-01-22 01:23:24

Canon 5DS R
Canon 35mm f/1.4L II

Aperture Series: Wood at Base of Waterfall, Gold Glimmer

Blue/violet light is the most difficult to correct, hence Canon’s marketing of the 35/1.4L II makes a point of discussing the “Blue Spectrum Refractive Optics element”. It makes sense to put the Canon 35/1.4L II to the test on a challenging scene in which blue light predominates.

This scene looks at contrast and sharpness, plus correction for color aberrations under very blue mountain lighting with a glimmer of warm reflected yellow light. There is much near-to-far depth, and thus depth of field cuts through the scene in a shallow zone.

Also present is a wide dynamic range from dark shadow areas to bright bleached wood against those areas. Along those boundaries, the contrast mercilessly reveals any haze or halos, particularly with a lens that has difficulty in the blue/violet area of the spectrum. Blue/violet light is the most difficult area of the spectrum to correct, hence the violet fringing so often seen with many lenses on high contrast areas.

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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.

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Aperture series 1.4,2,2.8,4,5.6,8,11 available in full article

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