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An important diffraction effect in infrared photography.

G Nieuwenhuis
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Abstract

During a study of bruising, a strange effect was observed on the black-and-white infrared record. This took the form of a circular area of density, in the centre of the contusion, which lasted throughout the life of the bruise. Investigations revealed that the newer 105 mm f/2.8 Micro-Nikkor lenses were the cause, exhibiting unacceptable diffraction at apertures smaller than f/11.

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ContusionsHumansInfrared RaysLensesMalePhotographySkinJournal ArticleResearch Support, Non-U.S. Gov't

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G Nieuwenhuis. 1990. An important diffraction effect in infrared photography.. https://doi.org/10.3109/17453059009055326

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