I3A IT2.4-1987 (R1994) Photography (Sensitometry) - Black-and-White Aerial Camera Films - Determination of ISO Speed and Average Gradient (reaffirmation and redesignation of ANSI/ISO 7829-1986, ANSI PH2.34-1987) (same as ANSI/ISO 7829-1986 (R1994))

: Brown Technical Book Store

: 1110000040883

: Book

IS0 was requested to develop a method for measuring speed and average gradient of black-and-white negative camera filmprocess combinations used in aerial photography because of the incompatability of various existing standards; the aim being to create an International Standard that would incorporate the most important features of these standards.

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