Journal of the Society of Motion Picture Engineers (1930-1949)

Page scan 000259 from Journal of the Society of Motion Picture Engineers

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 #:
000259
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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250 HOLINGER AND BRUBAKER Vol 49, No. 3 optical parts from gross soiling or condensed moisture. The apparatus is held by a built-in handle when the operator is photographing through the endoscopes, or it is supported on a tripod for photography of the larynx by indirect mirror method. The camera is started and stopped by a trigger lever in the handle which also automatically raises the lamp voltage to the proper color temperature while the camera is running. The plane of sharp focus at the object is adjustable and may be placed at any position from 9 to 26J/2 in. from the FIG. 2. Interior of camera with cover and lamphouse removed. attaching clamp. The telescope and camera are focused simultaneously by a knob on the left side of the housing. The telescope shows an exact duplicate of the film image during finding and focusing as well as while the camera is running. A slot permits the insertion of a supplementary achromatic lens of 24.4 cm (95/s in.) focal length for photography of the eardrum at a relatively high magnification. The endoscopes and light-reflecting tubes are polished and nickelplated on their inner surfaces. Near the tip of each endoscope the interior surface is threaded for x/2 in. to help outline the circular field. This is necessary since it is impracticable to arrange the masking