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EXCERPT page containing first few paragraphs. 2023-03-25 05:01:54

Canon 5D Mark III
Canon EF 40mm f/2.8 STM

Comparison: Canon 40/2.8 STM vs Voigtlander 40mm f/2 SL II

Here are compared the Canon EF 40mm f/2.8 STM (new in 2012) to the Voigtlander 40mm f/2 SL II.

Both lenses are “pancake” lenses. The Voigtlander is manual focus and very nice to use in that mode. The Canon 40/2.8 is lousy for manual focus (twitchy), but offers autofocus.

Test scene

The 22-megapixel Canon 5D Mark III was used here. Live View with focusing loupe was used for precise focus.

The Canon 40mm offers a wider field of view by about 5%. Nominally calling the Canon 40/2.8 a 40mm, this would make the Voigtlander a 42mm lens. The difference is significant enough to make pixel-level sharpness comparisons less straightforward; some mental adjustment must be made when comparing.

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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 f/4

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