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 #:
000110
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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Aug., 1944 STEREOPTICON PROJECTOR 101 low degree of elasticity, lack of uniformity in heat absorption over the area of a piece of this glass is most likely to result in fracturing. Immediately adjacent to the outside of the water-cell, in the path of light between the cell and field condenser unit, is mounted a heatabsorbing shutter operating in the same manner as that found in 35-mm background projection equipment, interrupting the light path, the shutter being operated in synchronism with the camera. Experimental work has been done using a shutter made of Aklo No. 2 heat-absorbing glass, which absorbs approximately 30 per cent of the FIG. 3. Paramount transparency stereopticon, looking down on optical system showing water-cell, heat-resisting experimental glass shutter, and field condensing system for plates. heat, and which is transparent enough not to have the disturbing flicker effect of a solid shutter (Fig. 3). It might be said that one psychological advantage in using a glass shutter in stereopticon shots is that the average director is not disturbed by shutter flicker on the screen which is always existent with the conventional type used in motion picture projection. The following figures will indicate the conditions found without a shutter, with an opaque shutter, or with a shutter of heat-absorbing glass: