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 #:
000493
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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490 BAIRD AND DURIE November it can be seen that a row of five frames is laid down in the time required to move the film only one frame height. It is evident that for a given frame height and a given film velocity, the camera can take pictures at five times the rate possible when the film has the width of only one frame instead of five. A closer inspection of the top view will reveal that the prism P is actually cut into five prisms all mounted side by side on one shaft in the form of a "stack." In the stack there are as many prisms as V TOP "B" SIDE Fig. 1 — Schematic views illustrating the operating principles of the there are of the small lenses L and each one of the prisms receives light from one of the small lenses. Adjacent prisms are rotated with respect to one another about the shaft of the prism assembly by an angular amount corresponding to the time required for a slot to travel between adjacent lenses. In effect there are five cameras side by side, each with its own objective lens and prism to compensate for film movement ; but all cameras place their images on the same piece of film, all use the same projection lens, and all are exposed by a common shuttering device.