ISO 26:1993

INTERNATIONAL ISO
STANDARD
26
Third edition
1993-05-15
- Projector usage of
Cinematography
16 mm motion-picture films for direct front
projection - Specifications
Cinematographie - Utilisation du film 16 mm dans Ie projecteur pour Ia
projection frontale directe - Spbcifica tions
Reference number
ISO 267 993(E)

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ISO 26:1993(E)
rd
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 26 was prepared by Technical Committee
lSO/TC 36, Cinema tography.
This third edition cancels and replaces the second edition (ISO 26:1985),
of which it constitutes a technical revision.
Annex A of this International Standard is for information only.
0 ISO 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronie or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
ii

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INTERNATIONAL STANDARD ISO 26:1993(E)
- Projector usage of 16 mm
Cinematography
motion-picture films for direct front projection -
Specifications
on the leader and on the label of the film Container as
1 Scope
recommended in ISO 5768 and ISO 8400.
This International Standard specifies the emulsion
orientation, the rate of projection, the Position of the
4 Rate of projection
projected image area and the relationship between
picture and Sound in the projector, intended for direct
The rate of projection shall be 18 frames per second
front projection of 16 mm motion-picture films with
+ 1 frame per second (preferred) or 16 frames per
photographic and magnetic Sound records and
gecond -$#g frames per second for silent motion-
16 mm silent motion-picture films.
picture films and 24 frames per second ~t: 1 frame per
second for Sound motion-picture films.
2 Normative references
NOTES
The following Standards contain provisions which,
1 Silent projectors having manually adjustable Speed
through reference in this text, constitute provisions
should be capable of reaching projection rates of 16 and 18
of this International Standard. At the time of publi-
frames per second.
cation, the editions indicated were valid. All Standard
...