Wall, E. J. (Edward John), 1860-1928 · Boston, Mass., American Photographic Publishing Co. · leaf 232
COLOR PHOTOGRAPHY 220 The best results are obtained in two-color work by using for the two negatives the regions shown in Fig. 26; R represents those rays which should act on the pan- chromatic plate and G those for the front plate; but un- fortunately the sensitiveness of the normal chloro-bro-… … color-sensitized, so we should have to sensitize them. The most satisfactory dye for this purpose would be the new German dye pinaflavol, but whether this is yet obtainable commercially is not known. This dye sensi- tizes far more satisfactorily than all others for just the particular region that…
Color photography
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