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 #:
000616
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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1949 TELEVISION STUDIO LIGHTING 613 in terms of appropriate grays, is important. Accordingly, studio work is usually done with one of the two other types of image-orthicon tubes whose sensitivity is lower by a factor of 2 to 5 times. Adding up the effects of the three foregoing factors, we come out with a practical requirement of from 200 to 300 foot-candles of incident-light intensity for good television studio work. 3500 4500 5000 5500 6000 65OO WAVELENGTH IN ANGSTROM UNITS IVIOLET i BLUE GREEN lYELLOWIORANCq General Electric Lamp Department Fig. 1 — Photoeffectiveness of 5655 image orthicon with 4500-degree white fluorescent lamps and 3000-degree-Kelvin tungsten lamps. All of the above curves are based on the fluorescent lamps except curve B. COLOR REQUIREMENTS The curves of Fig. 1 show the variation with color of signal output from a typical image-orthicon camera tube under illumination with fluorescent and incandescent lamps. The ordinates of these curves are proportioned to the actual electrical signal voltages developed in the transmitting channels following the camera. It will be noted