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 #:
000346
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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per turn are correct as indicated by the meter. A fan of 50 cu ft/min capacity directs a moving air stream across the slide to prevent damage to the slide. This fan is started when the arc power supply is turned on. With the cooling from this blower, it is possible to project dense 3j in. by 4 in. slides for periods of an hour or more continuously without visible deterioration to the slide. The arc "on-off" switch is located at the top rear of the lamphouse. A manually operated dowser interposed just before the slide carrier and lens assembly enables the arc to be burned in a stand-by condition. Single-element objective lenses have been found suitable for use with 3j in. by 4 in. slides in the focal length range of 17 in. to 30 in. Corrected objective systems are generally necessary for focal lengths shorter than 17 in. Discussion J. A. Tanney (S.O.S. Cinema Supply Corp.} : Have you had any experience with wide-angle lenses of comparatively short throw? Mr. Hatch: I understand that there is a type of lens which has recently appeared which will give a wide-angle picture with a very short throw. It is possible that such an objective system could be coupled with this projector. Mr. Tanney: What I had in mind was its possible ues in TV studios for backgrounds or in motion picture work for still backgrounds. Mr. Hatch: We are going to investigate those possibilities in connection with this projector. Arthur J. Hatch: Arc Slide Projector 337