Journal of the Society of Motion Picture Engineers (1930-1949)

Page scan 000558 from Journal of the Society of Motion Picture Engineers

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 #:
000558
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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1948 NINE RECENT AMERICAN STANDARDS . 543 American Standard Scanning-Beam Uniformity Test Film for •-Millimeter Motion Picture Sound Reproducers (Laboratory Type) K.'i-. V. S. /'at. Off. Z22.66-1948 'UDC 778.5 Page 1 of 2 Pages 1. Scope and Purpose 1.1 This standard describes a test film which may be used for determining the uniformity of scanning-beam illumination in 35-millimeter motion picture sound reproducers. The recorded sound tracks shall be suitable for use in laboratories and factories. 2. Test Film 2.1 The test film shall contain a number of -1000-cycle, variable-area tracks of narrow width, recorded at 100-percent modulation. 2.2 The test film shall contain 17 individual sound tracks, each with the same amplitude of approximately 0.007 inch. These tracks shall appear on the film in succession, the first so placed that its center line shall be not more than 0.197 inch from the guided edge of the film, and the seventeenth so placed that its center line shall be not less than 0.292 inch from the guided edge of the film. The intermediate tracks shall be spaced at equal intervals between the first and seventeenth tracks, similar to that shown in Fig. 1. FIG. 1 2.3 The film stock used shall be cut and perforated in accordance with American Standard Cutting and Perforating Dimensions for 35-Millineter Motion Picture Positive Raw Stock, Z22.36-1947, or any subsequent revisions thereof. 2.4 Each test film shall be provided with a suitable head leader identifying the film.