Journal of the Society of Motion Picture Engineers (1930-1949)

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F. EDOUART Vol 43, No. 2 process production has long been used, but at best this medium has been far from satisfactory for a number of reasons. First, the basic monochromatic values and density of the plates seldom permit the correct reproduction and richness of true color. There is the everpresent problem of coloring the slides correctly and evenly for enlargement to a screen picture of any size, a job requiring the most FIG. 1. Paramount transparency stereopticon, operating side showing adjustable plate holder and lens mount. meticulous skill, care and patience. Then there is the difficulty of securing stable nonfading color pigments and dyes that will stand the heat and intensity of the Super-Hi arc light. Added to these, there is the troublesome problem of securing heat-resisting, nonbreakable glass plates that will stand the terrific heat necessary for sufficient light to rephotograph in color. These are just some of the problems of using artificially colored plates.