EXCERPT page containing first few paragraphs. 2021-12-04 02:48:40
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One sample tested briefly. Unsharp corners even at f/11, backfocus, and hot spots make this lens a non-starter for IR work.
Canon 70-300mm f/4.5-5.6 DO IS hot spots
Brief outdoor shooting showed strong hot spots. As backfocus and resolution appeared to be marginal, no further consideration was given to the lens.
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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.