Abstract

This paper describes a Thin Probe Pulsed Light Photometer for "direct" reading at the film plane. It represents an "order of magnitude" improvement in sensitivity, and measures pulsed light intensities to an accuracy of 5%. It is not affected by direct daylight, only pulsed light. Method of calibration and the practical use of this meter to test the timing performance of cameras on the range or track will be presented.

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