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I3A IT2.4-1987 (R1994)
- Photography - Sensitometry of Screen/Film Systems for Medical Radiography - Part 1: Determination of Sensitometric Curve Shape, Speed and Average Gradient (same as ANSI/ISO 9236-1-1996)
- standard by International Imaging Industry Association, 04/17/1997
- Publisher: I3A
$18.00$35.00
IS0 was requested to develop a method for measuring speedand average gradient of black-and-white negative camera filmprocesscombinations used in aerial photography because ofthe incompatability of various existing standards; the aim beingto create an International Standard that would incorporate themost important features of these standards.
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