Preparation of Duplicate Negatives using Eastman Color Reversal Intermediate Film

Clark Beckett, Robert A. Morris, Richard K. Schafer, J. Marvin Seemann

Professional motion pictures require 35mm color duplicate negatives from camera color negative originals and often require 16mm reduction color duplicate negatives as well. Historically, these duplicates have been produced by a two-stage (positive-negative) reproduction cycle with resulting losses in color and sharpness and increased graininess. Frequently four or six printing stages are required. Significant quality and cost advantages may be obtained by preparation of a color duplicate negative in one stage using a new reversal-processed color duplicating film, Eastman Color Reversal Intermediate Film, Types 5249 and 7249. The new film contains color masking layers which, when processed in the CRI-1 process, give the required 1.0 printing contrasts. Preparation of the color duplicate negative requires use of an optical printer to preserve orientation as well as to introduce special effects or obtain the required reduction.

Print ISSN
Published
1968-10
Content type
Original Research
DOI
10.5594/J13641