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

Page scan 000629 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 #:
000629
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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626 BLOUNT December MACt OPTHICON \ WAVELENGTH IN ANGSTROM UNITS Fig. 1 — Derivation of photoeffectiveness curves. the other white, might have reflection factors of 2 and 80 per cent, respectively. With equal incident illumination, the brightness ratio1 will be 40 to 1. Since existing equipment will correctly produce differences in brightness only up to 20 to 1, it is well to avoid using both darkest and lightest materials in a given scene unless sufficiently separated to permit compensating differences in illumination. Television studio techniques should attempt to create on the twodimensional receiving screen an illusion of three dimensions. The SOOO 6000 WAVELENGTH IN ANGSTROM UNITS ULTRA VIOLET VIOLET | BLUE | I""**! YELLOW! OPANOE Fig. 2— Photoeffectiveness of 5769 image orthicon with 3000-degree-Kelvin tungsten sources. (A) no filter. (B) Corning No. 9788 filter. (C) Wratten No. 7 filter. (D) Wratten No. 7 filter.