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IS0
IN TE RN AT1 ON AL ORGANIZATION FOR STAND AR D IZ AT1 O N
IS0 RECOMMENDATION
R 358
CINEMATOGRAPHY
MAXIMUM ASPECT RATIO OF PROJECTOR APERTURE
FOR PROJECTION OF 35 rnrn NON-ANAMORPHOTIC
MOTION-PICTURE FILMS
1st EDITION
December 1963
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the oniy valid standard is the national standard of that country.
in Switzerland
Printed
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 358, Maximum Aspect Ratio of Projector Aperture for Pro-
jection of 35 mm Non-Anamorphotic Motion-Picture Films, was drawn up by Technical Committee
ISO/TC 36, Cinematography, the Secretariat of which is held by the American Standards Asso-
ciation Inc. (ASA).
Work on this question by the Technical Committee began in 1955 and led, in 1959, to the
adoption of a Draft IS0 Recommendation.
In August 1961, this Draft IS0 Recommendation (No. 458) was circulated to all the IS0
Member Bodies for enquiry. It was approved by the following Member Bodies:
Belgium Czechoslovakia Romania
Brazil France Sweden
Canada Italy United Kingdom
Chile Net herlands U.S.A.
U.S.S.R.
Three Member Bodies opposed the approval
...