The requirements for a photographic system to reproduce the chromaticities of selected colors can be described by a set of equations. These equations relate the amounts of dye needed in the reproduction to the exposure densities of the original colors. These equations have been called color-reproduction equations by Brewer, Hanson, and Horton. These color-reproduction equations have been computed for a negative-positive color system.
The equations state the requirements placed on a color system if it is to reproduce the chromaticities of the original. A similar set of color-reproduction equations can be computed which describe the actual performance of the color system. These actual color-reproduction equations are established by measuring the actual amount of dye produced in a process when reproducing a color chart. These amounts of dye are related to the exposure densities of the original colors. The required and actual color-reproduction equations for a negative-positive color system are compared. The similarity between these sets of equations show how well a modern negative-positive color system fulfills conditions of good color reproduction.
© 1955 Optical Society of AmericaFull Article | PDF Article
OSA Recommended Articles
David L. MacAdam
J. Opt. Soc. Am. 28(12) 466-480 (1938)
J. A. C. Yule
J. Opt. Soc. Am. 28(12) 481-492 (1938)
W. T. Hanson
J. Opt. Soc. Am. 40(3) 166-171 (1950)