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 #:
000445
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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428 JOSEPH A. DUBRAY [J. S. M. P. E. spring assemblies, equally spaced, as shown in Fig. 2, which insure stability and perfection of registration. When the turret is so set that the rollers, A, fall into the locking notches, a plunger controlled by the supplementary notches, N, is forced into a groove of the operating button and positive locking is insured. The locking device is so designed that the operating button cannot be released unless one of the three lenses is in its exact photographing position. Index marks and captions are conveniently engraved on the camera frame to assist the operator in the setting of FIG. 1. The Filmo Model 70-D camera. the turret. The camera door, which gives access to the loading chamber, is located at the opposite side of the winding key and control dials. As shown in Fig. 3, the door, D, fits into the frame of the camera so as to make it light-proof. It is securely fastened to it by means of two simultaneously operating cams, controlled by the latches, L, which serve also as indicators for the "Open" and "Closed" markings engraved on the camera door. The viewfinder, F, is an integral part of the camera door, and has been especially designed for its rapid setting at an aperture inclosing the field of view covered by any of six lenses of different focal length. These openings have been calculated for lenses of focal lengths of 20 mm., 1 in., 2 in., 3 in., 4 in., and 6 in., which quite completely