ISO 25:1994

ISO
INTERNATIONAL
25
STANDARD
Second edition
1994-07-15
Cinematography - Camera usage of
16 mm motion-picture film -
Specifications
- Emploi du film cinematographique 16 mm dans Ia
Cindma tographie
Camera - Spkifica tions
Reference number
ISO 25:1994(E)

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ISO 25:1994(E)
Foreword
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 sf 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 25 was prepared by Technical Committee
lSO/TC 36, Cinematography.
This second edition cancels and replaces the first edition (ISO 253 976),
of which it constitutes a technical revision.
0 ISO 1994
All rights reserved. Unless otherwise specified, 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 Permission in writing from the publisher.
International Organkation for Standardkation
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland

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ISO 25:1994(E)
INTERNATIONAL STANDARD 0 ISO
Cinematography - Camera usage of 16 mm
motion-picture film - Specifications
1 Scope 3 Specifications
This International Standard specifies the Position of
3.1 The frame rate of exposure for film containing
the emulsion, the frame rate of exposure, and the
a Sound record or to be used in conjunction with a
orientation of the emulsion area being exposed for
Sound record shall be 24 frames per second for both
16 mm silent and Sound motion-picture film perfor-
photographic and magnetic Sound.
ated along one or both edges.
NOTE 1 A frame rate of exposure of 18 frames per sec-
ond may still be found, especially for films without a Sound
record.
3.2 The frame rate of exposure for film not used for
2 Normative references
Sound shal
...