A Note on Telephotography

Abstract

HAVING examined a number of formulæ for the circle of illumination in telephotography, and found them all to be inapplicable in certain cases, I propose the following, which seem reasonable and are applicable in all cases. These formulæ are particularly vital in the line along which telephotography is at present developing.

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B., A. A Note on Telephotography. Nature 105, 488 (1920). https://doi.org/10.1038/105488a0

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