A New Color Timer for Motion-Picture Films

A new device has been developed for the determination of the correct printing exposures for color films. The device accepts a density range test as exposed under the negative scene with average standard exposure conditions. The viewing field under the test positive may be varied in hue to the desired color balance while a condition of constant brightness is automatically maintained. A built-in analog computer calculates the corrections from the standard condition in terms of red, green and blue light for additive printing and cyan, magenta and yellow light for subtractive printing. The variable hue viewing field is surrounded by standard photometric fields to maintain constant eye adaptation. The system enables the color timer to specify correct printing conditions directly from the single test series. In most cases, a fully corrected print is produced directly from the color timing.

Print ISSN

0361-4573

Published

1958-02

Content type

Original Research

DOI

10.5594/J06224