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 #:
000506
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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about two inches in all directions. Also at this aperture the relatively small amount of light lost is well worth the definition obtained in the pictures. At a camera speed of 5000 frame/sec, the lens is stopped down to //8 using the same amount of light as for the slower speed. In this way almost no loss in definition occurs. If meticulous care is taken in positioning the heart, mirror and electrocardiographic machine, and careful attention is given to the lighting, exposure and focus, truly beautiful pictures result. More important than esthetic considera tions, the films here described now make it possible to demonstrate definite relationships between electrocardiographic patterns and their mechanical counterparts. Although this technique has been in use only a few years, it has already yielded conclusive evidence confirming or disproving a number of previous theories concerning the mechanism of common cardiac disorders. The pictures can be studied repeatedly and thus have proved to be a valuable scientific instrument, for they reveal with fine detail and clarity, action that is not visible to the unaided eye. Fields et al.: Cine-Electrocardiography 497