. Transactions of the Society of Motion Picture Engineers (1921). Fig. 2—Integrating Flicker Photometer. (Front View).. Fig. 3—Integrating Flicker Photometer. (Rear Vtew). values are desired they can be read directly from suitable conversiontables. Photographs of the complete instrument as assembled are shownin Figures 2 and 3. The methods of coloring positive him may for the purpose ofthis discussion be divided into three classes, namely: a. Dye tinting. b. Dye toning. c. Chemical toning. A detailed discussion of the methods employed in the dye tint-ing of film has been presented before this
. Transactions of the Society of Motion Picture Engineers (1921). Fig. 2—Integrating Flicker Photometer. (Front View).. Fig. 3—Integrating Flicker Photometer. (Rear Vtew). values are desired they can be read directly from suitable conversiontables. Photographs of the complete instrument as assembled are shownin Figures 2 and 3. The methods of coloring positive him may for the purpose ofthis discussion be divided into three classes, namely: a. Dye tinting. b. Dye toning. c. Chemical toning. A detailed discussion of the methods employed in the dye tint-ing of film has been presented before this society at a previousmeeting by Mr. G. A. Blair, and is published in Vol. 10, page 45 ofthe Transactions of this Society. By this method the color is ob-tained by immersing the finished positive in a solution of dye whichcolors the gelatine, thus giving a uniform color to all parts of thepicture. A complete discussion of the various processes of dyetoning and chemical toning will be found in a booklet entitled TheTinting and Toning of Eastman Positive Motion Picture Film,published by the Eastman Kodak Company. A
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