Principles of cinematography : a handbook of motion picture technology (1953)

Page scan 000343 from Principles of cinematography : a handbook of motion picture technology

Record Details:

Title:
Principles of cinematography : a handbook of motion picture technology
Date:
1953
Publisher:
London : Fountain Press
Volume:
Principles of cinematography : a handbook of motion picture technology
Leaf #:
000343
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Date Added:
May 15, 2025
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SOUND REDUCTION PRINTING 339 any given picture is not printed alongside the picture but some distance in advance of it. (see Chapter 9). In the case of 35-mm films this separation is standardised at 20-frames, or 15-inches whereas, in the case of 16-mm films, the separation is increased to 26-frames although, in linear measure, this is only equivalent to 7-8-inches. The difference in actual lengths between the two cases is so much more than the difference between the number of frames by which the sound is advanced since the distance occupied by one 35-mm frame is 0-75-inch whereas that occupied by one 16mm frame is only 0 • 30-inch. One further means whereby sound may be added to 16-mm films is, of course, by directly recording onto 16-mm instead of 35-mm film whilst in the original stages of production. This process has not been dealt with in any detail because it is broadly similar to the methods used to make 35-mm original recordings and, therefore, the basic principles involved have already been described in Chapter 7. For similar reasons no special attention has been paid to the processing of 16-mm sound film although, in Chapter 16, mention will be made of the essential processing differences encountered in sub-standard emulsions of the 'reversal' types.