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Optical Engineering

The Meaning of Numbers to Photographic Parameters
Author(s): Daan M. Zwick
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Paper Abstract

A major function of the photographic instrumentation engineer is to reduce phenomena to numbers, so he can measure, analyze, and manipulate. Photographic materials, e.g., films and papers, are part of his instrumentation. The purpose of this paper is to help the engineer, and others, understand that numbers can be assigned to characteristics of photographic materials, and what worth such numbers can have. The numbers discussed are those associated with sensitometry (speed, contrast, gamma, latitude) and especially those associated with image structure (RMS granularity, and modulation transfer function). Both color and black-and-white films are considered.

Paper Details

Date Published: 1 July 1966
PDF: 7 pages
Opt. Eng. 4(5) doi: 10.1117/12.7971341
Published in: Optical Engineering Volume 4, Issue 5
Show Author Affiliations
Daan M. Zwick, Eastman Kodak Company (United States)


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