Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
000232
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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Feb., 1930] PERFORATION AND ITS MEASUREMENT 215 inches .ta|eo mm 4.72J i I I 4 Ll*J*J . A FIG. 3. Use of the upper scale. right edge of the perforation hole will coincide exactly with the left edge of the black mark underneath. By means of a scale, which is given in both millimeters and inches outside the edge of the film, it is possible to read, at the point at which this coincidence takes place, the distance or pitch between the centers of the perforation holes on the piece of film being measured. As indicated by Fig. 3, in order to secure as much accuracy as possible, the distance between the upper set of marks and the lower 4 | — ~^L W in I I I I i I I *-|« m i 55 .18J60 FIG. 4. Use of the lower scale.