filter would have to correspond.Such contra colours could only be ascertained spectroscopi-cally, a method adapted by Hazura and Hruza. Thedifficulties which are met when such filters are to be made,are almost insurmountable. It is clear that the chosen fundamental colour mustbelong to a practical… … II. Fig. 26. If I (fig. 26) represents the absorption band of theprinting colour II shows the light filter and the plate mustbe made equally sensitive from D^ E to over F. Theeffect is the same as if the plate had been sensitized accord-ing to absorption curve I, and would have been exposedwithout…
Color photography · Color printing
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