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 #:
00035
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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an angle of 20° to the screen. The spacing must be accurate and the ratio between the opening and the width of the bar is 3 to 5 at the top and 2 to 5 at the bottom. The path of the selector grill is so designed as to have zones of vision every four degrees as shown in the seating arrangement in Fig. 9. The correct viewing distance is 2\ to 6 times the width of the screen. It is simple to Figure 9. pre-set the seats in the vision zone of 40°. Rl, R2, R3, R4 and R5 represent the rows of seats. G and D represent the vision zones. OG and OD represent the two images of the stereoprojector. The spectator will naturally keep himself in a suitable vision zone that is not rigid, so he may move his head slowly until the visual accommodations are most favorable. The direction of rotation of the selector grill is from left to right, turning at a constant speed of four turns a second. When projecting motion pictures it was found necessary to use a synchronous motor to turn the grill, to eliminate any stroboscopic interference with the projector's shutter. The overall light-loss in projection on the large screen shown in Fig. 7 is estimated to be in the neighborhood of 50%. This screen can be fabricated in most sizes up to a 10-ft grill. We understand, Mr. Savoye is now engineering 26 Figure 10. July 1952 Journal of the SMPTE Vol. 59