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

Page scan 000132 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 #:
000132
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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Fig. 5. Side view, showing control knob and dial assembly. Comments The Richardson Camera Co., when designing the lens-focusing system, were aware of the discrepancies between the three lenses. The problem, however, was not to construct an absolutely accurate focusing system as would be required on precision optical printers but to provide an efficient, simple and quick method of follow-focusing for the cinematographer on action shots. In focusing a lens on a variable moving subject, it is necessary for the camera man or his assistant to estimate or determine by some visible means the distance between the camera and subject. He must then transfer this information to the lens-focusing control knob or footage dial all of which involves a human function with limited accuracy. The depth of focus of the lens in use is intended to permit a Richardson and Gaisford: Focus Device and Blimp 123