16 MAKING THE EXPOSURES . In the same way the orthochromatic film helps preserve cloud effects, differentiating between the clouds and the surrounding blue sky. In a properly equipped factory such as ours, there is no diffi- culty whatsoever in making any desirable degree of orthochroma- tism.… … diately it became necessary Chart showing range of spectrum. to substitute a deep red for orange because this orthochromatic film was so sensitive to yellow. Kodak N. C. Film has back of. it, not only perfect manufac- turing facilities, but every advantage that experience and scientific research…
Photography
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