International Review of Educational Cinematography (Jul-Dec 1929)

Record Details:

Title:
International Review of Educational Cinematography
Date:
Jul-Dec 1929
Publisher:
International Educational Cinematographic Institute
Volume:
International Review of Educational Cinematography (Jul-Dec 1929)
Leaf #:
000710
Language:
English
Collection:
Non-Theatrical Film
Format:
Periodicals
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Description:
Date Added:
September 21, 2023
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yellow monochrome, and coating with bromide gelatin emulsion; printing, development, and transformation to a yellow image by the process of fixing by a copper mordant, in a manner analogous to that above described, creates considerable complications and involves processes and operations such as the preparation and coating with bromide gelatin emulsion, which are alien to the usual processes adopted in film factories. The production of this third image intended to form the trichromatic trio, which alone can meet the exigencies of a complete colour rendering, represents the most arduous of all the problems facing colour cinematography by subtractive synthesis, and one can have no idea of the variety of processes that have been suggested and the number of patents taken out. It has been suggested to produce the third monochrome by transferring from a film prepared according to the Pinatipia process, or else by means of a photo-mechanical print, or by sticking two images, one bi-chromatic and one monochrome, together. But, without any wish to detract from the merits of so many inventive minds, I must conclude by repeating what I said at the beginning: « The only practical solution of colour cinematography for the present is to be sought in bi-chromatic and tri-chromatic accumulative synthesis and bi-chromatic subtractive synthesis. Prof. Rodolfo Namias.