An Experimental 35-mm Multilayer Stripping Negative Film

The so-called “three-strip” method is generally considered to give the best results when taking professional color motion pictures. An objection to this method is that it requires the use of a special camera fitted with a beam-splitter prism. This paper describes work that led to the development of a single multilayer negative film which can be used in any standard motion picture camera. After exposure and before development, the two upper layers are wet-stripped separately onto special transfer supports. Thus the single support of the multilayer film bears three color-sensitive emulsions in the following order: a red-sensitive layer next to the support, an intermediate green-sensitive layer, and an upper blue-sensitive layer. The red- and green-sensitive layers, and the green- and blue-sensitive layers are each separated by interlayers which facilitate stripping of the two upper layers. The film has an over-all thickness about the same as standard motion picture negative film. Its speed is such that good negatives of an open landscape can be exposed at f/8 or even f/11. An experimental stripping machine is described which accurately registers the perforations of the two stripped layers with those of the original film on which remains the red-sensitive layer.

Print ISSN

0898-042X

Published

1950-04

Content type

Original Research

DOI

10.5594/J05230