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Preferred Conditions for Viewing Motion Pictures: Our Committee has concerned itself with the fundamental problem of determination and exposition of the preferred conditions for viewing motion pictures. The Committee has encouraged discussion of the history and important factors having technical bearing on this problem. A summary of these matters was published last year in the Journal by one of our committee members.5
The Committee arranged and sponsored a Symposium on Screen Viewing Factors at the Spring 1951 Convention of the Society. The papers presented at the symposium were published in the September 1951 Journal6 and contain much information pertinent to the determination of preferred viewing conditions. There are indications that our efforts are bearing fruit and that new interest has been stimulated in the experimental determination of some of these factors and further important revelations can be expected.
References
1. W. W. Lozier, Chairman, "Screen Brightness Committee Report," Jour. SMPTE, 54: 756-757, June 1950.
2. W. W. Lozier, Chairman, "Report ori Screen Brightness Committee Theater Survey," Jour. SMPTE, 57: 238-246, Sept. 1951.
3. W. W. Lozier, Chairman, "Further Report on Screen Brightness Committee Theater Survey," Jour. SMPTE, 57: 11-15, Nov. 1951.
4. "Revision of Screen Brightness Standard," Jour. SMPTE, 58: 452, May 1952.
5. F. J. Kolb, Jr., "The scientific basis for establishing brightness of motion picture screens," Jour. SMPTE, 56: 433-442, April 1951.
6. Symposium on Screen Viewing Factors (6 papers), Jour. SMPTE, 57: 185-237, Sept. 1951.
The Committee
W. W. Lozier, H. J. Benham F. E. Carlson M. H. Chamberlin
E. R. Geib
L. D. Grignon A. J. Hatch L. B. Isaac W. F. Kelley
F. J. Kolb L. J. Patton
Chairman O. W. Richards Leonard Satz Ben Schlanger Allen Stimson
C. R. Underhill G. H. Walter H. E. White
A. T. Williams
D. L. Williams
Reaffirmation — PH22.50-1952 16mm Projector Reel Spindles
ASA rules require periodic review of all American Standards. In accord with this procedure, the 16mm and 8mm Motion Pictures Committee and the Standards Committee have recently reviewed Z22. 50-1 946 and reaffirmed it without change. The appropriate ASA committees have now approved this reaffirmation and the standard is therefore published on the following page as a validated 1952 standard.
W. W. Lozier: Screen Brightness Report
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