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 #:
000111
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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102 F. EDOUART Vol 43, No. 2 Photographic value of illumination Light incident upon eye Heat incident upon slide No Shutter Per Cent 100 100 100 Metal Shutter Glass Shutter Per Cent Per Cent 100 63 63 100 91 70 It is evident from the above that the introduction of the metal shutter reduced the heat flux upon the plate by 37 per cent, and at the same time introduced the flicker characteristic typical of 35-mm FIG. 4. Paramount transparency stereopticon, operating side showing control panel on Mole-Richardson lamp, speaker system, and tachometer. background projection, whereas the heat-absorbing glass reduced the heat flux upon the plate by 30 per cent and caused a negligible flicker. With an increase of only 7 per cent in total heat on the plate, the shutter flicker was changed from a condition of 100 per cent illumination dropping to zero with the solid shutter, to a condition of 100 per cent dropping to approximately 80 per cent, under which circumstances the presence of the glass shutter could hardly be noticed. Obviously this freedom from flicker is of considerable value in exposure determination.