Testing and Maintaining Photographic Quality of Cinematographic Emulsions

THE photographic emulsion is the basis of the moving picture. Two emulsions of course are necessary-the negative and the positive. The negative emulsion must be exceedingly fast, that is to say it must be very sensitive to light; it must be orthochromatic or color-sensitized and be capable of rendering faithfully all the tones of the scene photographed without sacrificing any detail in highlights or shadow, consequently it must have considerable latitude and be an emulsion of comparatively low contrast. The positive emulsion is slow and must be capable of reproducing all that is in the negative, and at the same time must have the possibility of developing to full rich blacks in order to have proper projection value, therefore it is an emulsion of considerably higher contrast than the negative.

Print ISSN

0096-6460

Published

1921-10

Content type

Original Research

DOI

10.5594/J12481