Transactions of the Society of Motion Picture Engineers (1922)

Record Details:

Title:
Transactions of the Society of Motion Picture Engineers
Date:
1922
Publisher:
Washington D.C. : Society of Motion Picture Engineers
Volume:
Transactions of the Society of Motion Picture Engineers (1922)
Leaf #:
00082
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:
December 28, 2023
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hand lower corner of one or more of the pictures, consists of an electric motor so geared to a hand as to give it a hundred revolutions per send over the face of a white dial. The dial is about 14 inches in diameter, and the hand is of thin, light wood made to contrast by painting one end black. Each revolution marks a hundredth of a second, so that the sixteen exposures of each turn are sufficiently well defined for the purpose. However, as the camera motor itself, making 2100 R.P.M. doubled by stepping up, and multiplied by 24, the lens factor, is fairly reliable, I often find myself counting the exposure for each revolution of the clock dial. In other words, I use the camera to time the timer. /2