Society of Motion Picture Engineers : incorporation and by-laws (1926)

Page scan 000174 from Society of Motion Picture Engineers : incorporation and by-laws

Record Details:

Title:
Society of Motion Picture Engineers : incorporation and by-laws
Date:
1926
Publisher:
New York : Society of Motion Picture Engineers
Volume:
Transactions of the Society of Motion Picture Engineers (1926)
Leaf #:
000174
Language:
English
Subjects:
motion pictures, Cinematography -- Periodicals
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Description:
Preceeded by an unnumbered issue published in 1916 called: Incorporation and by-laws
Date Added:
September 12, 2024
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168 Transactions of S.M.P.E., September 1926 quirements that a film even though new should in its dimensions correspond to multiples or submultiples of those already used for the standard. The Pathe-Rural film thus contains 105 pictures per meter (32 per foot), and the reel of 150 meters (500 feet) exactly corresponds to a 300 meter (1000 feet) reel of the normal fihn. For the same speed of projection, the strain on the Pathe-Rural film passing through the projector is, as result of its smaller size, only a quarter of the strain on the normal film. For this reason, a narrow film can be made on a finer and weaker support, the thickness of the Pathe film being fourteen thousandths of a centimeter, of which twelve thousandths are those of the support made of cellulose acetate. In the Pathe-Rural projector such a film can be used a thousand times without apparent wear. The 500 foot reel weighs barely 500 gms. (1 lb. 2 oz.), while for the same projection time a reel of corresponding length of the normal film exceeds 2 kgs. (4-3/2 lbs.) in weight. In j-ecent years, other narrow films have been produced, one resulting from cutting the standard film, perforated, down the middle, while the other is of a width of 16 mm and carries images lOJ/^ mm x 73^ mm with an area of 78 square millimeters. Compared to the latter film, the ima ge on the Pathe-Rural film, which is of practically the same width, is 60% greater, measuring 126 square millimeters.