Journal of the Society of Motion Picture and Television Engineers (1950-1954)

Record Details:

Title:
Journal of the Society of Motion Picture and Television Engineers
Date:
1950-1954
Publisher:
Easton, Pa. : The Society
Volume:
Journal of the Society of Motion Picture and Television Engineers
Leaf #:
000180
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Date Added:
July 19, 2022
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2.3 The sound record shall have correct azimuth to within — 3 min of arc. 2.4 The recorded level at 8000 cycles shall be that level which results from an input current to the magnetic head which is 1 db below the 400-cycle current input which would give a total harmonic distortion of 2V2% when that 400-cycle tone is reproduced. 2.5 The coating position and direction of travel shall be as specified in American Standard PH22.86-1953, or the latest revision thereof, and the base shall be coated from one row of perforations to the other row, or from edge to edge. Page 2 of 2 pages 3. Film Stock 3.1 The film stock used shall be of the lowshrinkage, safety type, cut and perforated in accordance with American Standard Z22.361947, Cutting and Perforating Dimensions for 35-Millimeter Motion Picture Positive Raw Stock, or the latest revision thereof approved by the American Standards Association, Incorporated. 4. Film Length 4.1 The film shall be supplied in 50-ft lengths or multiples thereof. 5. Identification 5.1 Each test film shall have suitable identification markings. NOT APPROVED PH22.99 American Standards PH22.75-1953 and PH22.90-1953 16mm A and B Windings, and Aperture Calibration of Lenses Two American Standards approved by the American Standards Association on December 17, 1953, are published on the following pages. These two standards were published previously for trial and comment in the October 1952 and February 1953 Journals, respectively. February 1954 Journal of the SMPTE Vol. 62 173