EXCERPT page containing first few paragraphs. 2019-05-25 03:08:00
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This lens is prone to strong hot spots, but can be used with excellent results if care is taken to not stop down too far and/or to choose subjects which are less impacted by a bright center. It arrived too late to prepare formal hot spot and backfocus data for this page, but the examples below should illustrate what is possible.
Canon 70-200 f/4L IS hot spots
Avoid scenes with strong highlights or specular reflections.
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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.