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EXCERPT page containing first few paragraphs. 2019-05-25 09:14:04

Lenses for Canon

Please see the Lenses page for important background information, including the lens rating system, with its discussion of hot spots, backfocus and sharpness.

Lens assessments are based on the my particular Canon EOS 5D converted for infrared use by using internal sensor glass with a 715 nanometer cutoff. According to, the 5D was adjusted for focus. Focusing performance could differ with other conversions of the EOS 5D, even those by, since filter glass and individual camera adjustment can all vary. But hot spot behavior is not likely to vary.

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Diglloyd Infrared Photography covers cameras and lenses for infrared photography.

The coverage explains all the issues involved in shooting in infrared, which do not change. It is not a review of any particular camera or lens, though many examples are included.

  • Guidance on workflow for infrared, including black and white and channel swapping for false-color images.
  • How infrared renders, and why certain spectral cutoffs matter: false color vs black and white.
  • Image quality issues to be on the lookout for in infrared.
  • Numerous lens evaluations in infrared.

View an overview of infrared as well as filter spectral transmission plus examples from an optimal lens.

Settings for hot spot conversion
(sharpness=1 used for backfocus images)
Canon Digital Photo Professional

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