Sensitometric Control of the Duping Process
J. P. Weiss · Journal of the Society of Motion Picture Engineers · 1946
Because of head-and-tail development effects, sensitometric exposures of the standard type cannot be wholly relied upon to give a true indication of picture contrast. A method is described whereby sensitometric exposures of unusual form can be used to establish processing techniques for making dupes. Good correlation with visual judgment of quality of a standard picture is obtained.