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 #:
000486
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 HALF-MILLION IMAGES PER SECOND section; the other three levels are above that plane and do not appear. In Fig. 4, apertures of two of the objective lenses are visible; the other two are above the plane of the section. Six of the refocusing lenses appear in cross section in Fig. 4, one for each level. Apertures of some of the refocusing lenses appear in this view on each of the six levels, but nearly half of the refocusing lenses on each level are above the plane of the section and are not seen. The hexagonal steel rotor, shown alone in Fig. 5, has six highly polished concave surfaces, each of which reflects the light beams through the refocusing lenses on one of the six levels. Master Aperture, Refocusing Lenses Objective Lenses Film-— ** Fig. 4 — Central vertical section through camera. Fifteen stationary vertical film strips are fitted to the shape of a sphere, concentric with and approximately twice as great in radius as the spherical wall in which the lenses are mounted. Each 'film strip accommodates one refocusing lens on each of the six levels. Each film strip is part of a 100-foot roll, 7/8 inch wide, arranged by mechanical details, not shown, in such a way that the exposed film can be pulled out and cut off after each shot, leaving the camera loaded for the next shot. Light from the photographic object enters the camera through the master aperture seen in Fig. 4 and is reflected by four plane mirrors