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 #:
00070
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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1949 C-R-TuBE APPLICATIONS 67 diagonal areas from whose appearance the shutter opening characteristics may be evaluated. Figs. 1 (a), (b), and (c) show some typical examples of such operation on a Graflex shutter. Fig. 1 (a) was made with a rather low vertical-oscillator frequency in order to illustrate the principle. The horizontal distance represents the time during which a particular portion of the slit traversed the film. This time can be seen to vary from one end of the focal plane to the other, Fig. 1 — (b) Same shutter with higher speed vertical sweep, showing change in speed of slit from top to bottom of focal plane. indicating that the shutter did not move at constant speed. Fig. 1 (c) shows a properly adjusted shutter which moves at almost constant speed from one end of the image plane to the other. FLASHBULB TESTING Using almost exactly the same equipment, for example, an oscillograph and a phototube pickup, many other applications present themselves in photography. For example, the testing of photographic flashbulbs and their light-output-versus-time characteristics, may be accomplished readily. A method, using the same basic