ISO 26428-1:2008
(Main)Digital cinema (D-cinema) distribution master — Part 1: Image characteristics
Digital cinema (D-cinema) distribution master — Part 1: Image characteristics
ISO 26428-1:2008 defines the uncompressed image characteristics for the digital cinema distribution master by specifying a pixel array, frame rate, pixel bit depth and colorimetry. The digital cinema distribution master image operational levels are defined by the maximum number of pixels and frame rate.
Souche de la distribution du cinéma numérique (cinéma D) — Partie 1: Caractéristiques d'image
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 26428-1
First edition
2008-09-01
Digital cinema (D-cinema) distribution
master —
Part 1:
Image characteristics
Souche de la distribution du cinéma numérique (cinéma D) —
Partie 1: Caractéristiques d'image
Reference number
ISO 26428-1:2008(E)
©
ISO 2008
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ISO 26428-1:2008(E)
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ii © ISO 2008 – All rights reserved
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ISO 26428-1:2008(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. Each 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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
ISO 26428-1 was prepared by the Society of Motion Picture and Television Engineers (as
SMPTE 428-1-2006) and was adopted, under a special “fast-track procedure”, by Technical Committee
ISO/TC 36, Cinematography, in parallel with its approval by the ISO member bodies.
ISO 26428 consists of the following parts, under the general title Digital cinema (D-cinema) distribution
master:
⎯ Part 1: Image characteristics
⎯ Part 2: Audio characteristics
⎯ Part 3: Audio channel mapping and channel labeling
© ISO 2008 – All rights reserved iii
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ISO 26428-1:2008(E)
Introduction
This International Standard comprises SMPTE 428-1-2006 and the following informative notes.
⎯ Informative reference: The French national standard NF S27-100, Cinematography — Electronic
projection rooms of digital cinema type, provides additional regional information.
⎯ Image structures (see Clause 3): Within a national entity, anamorphic lenses may be required under
certain circumstances in which masking limitations would not otherwise permit non-anamorphic projection.
⎯ Digital cinema image aspect ratios (see Annex A): An additional example aspect ratio of 1:66 to 1 would
be achieved in:
⎯ level 1 by using 3 584 horizontal pixels by 2 160 vertical pixels, and
⎯ levels 2 and 3 by using 1 792 horizontal pixels by 1 080 vertical pixels.
The International Organization for Standardization (ISO) draws attention to the fact that it is claimed that
compliance with this document may involve the use of a patent.
ISO takes no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured ISO that he is willing to negotiate licences under reasonable and
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the holder of this patent right is registered with ISO. Information may be obtained from:
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Intellectual Property Transactions
343 State Street
Rochester, NY 14650
USA
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights other than those identified above. ISO shall not be held responsible for identifying any or all such patent
rights.
iv © ISO 2008 – All rights reserved
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ISO 26428-1:2008(E)
SMPTE 428-1-2006
SMPTE STANDARD
D-Cinema Distribution Master —
Image Characteristics
Page 1 of 8 pages
Table of contents
Foreword
Introduction
1 Scope
2 Normative references
3 Image structures
4 Colorimetry
Annex A Digital cinema image aspect ratios
Annex B Dynamic range usage of the DCDM
Annex C Bibliography
Foreword
SMPTE (the Society of Motion Picture and Television Engineers) is an internationally-recognized standards
developing organization. Headquartered and incorporated in the United States of America, SMPTE has
members in over 80 countries on six continents. SMPTE’s Engineering Documents, including Standards,
Recommended Practices and Engineering Guidelines, are prepared by SMPTE’s Technology Committees.
Participation in these Committees is open to all with a bona fide interest in their work. SMPTE cooperates
closely with other standards-developing organizations, including ISO, IEC and ITU.
SMPTE Engineering Documents are drafted in accordance with the rules given in Part XIII of its
Administrative Practices.
SMPTE Standard 428-1 was prepared by SMPTE Technology Committee DC28.
Copyright © 2006 by THE SOCIETY OF Approved
MOTION PICTURE AND TELEVISION ENGINEERS
September 29, 2006
3 Barker Avenue, White Plains, NY 10601
(914) 761-1100
© ISO 2008 – All rights reserved 1
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ISO 26428-1:2008(E)
SMPTE 428-1-2006
Introduction
This standard describes the image characteristics of the Digital Cinema Distribution Master (DCDM). The
image characteristics and parameters are not subject to any further image processing prior to the
compression process described elsewhere.
In order for content creators to convert a Digital Source Master (DSM) into a Digital Cinema Distribution
Master (DCDM), this standard will define all of the metrics required for the image structure of the DCDM. This
DCDM image structure may then be transported by being mapped into either real time interfaces or into file
formats.
In the process of creating theatrical releases, a Digital Source Master, or DSM, is produced from which many
distribution elements are created, (e.g., Film Distribution Masters, Digital Cinema Distribution Masters
(DCDM), Home Video Masters, Airline Version Masters and Broadcast Masters). It is not the goal of this
specification to define the DSM. It is recognized that the DSM may consist of any color space, pixel matrix
(spatial), frame rate (temporal), bit depth and many other metrics.
This standard defines sets of operational levels, in terms of the maximum number of pixels, H pixel count and
V pixel count. In combination with the frame rate this determines the operational level, 1-3 as defined in
Table 1.
Page 2 of 8 pages
2 © ISO 2008 – All rights reserved
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ISO 26428-1:2008(E)
SMPTE 428-1-2006
1 Scope
This standard defines the uncompressed image characteristics for DCDM by specifying a pixel array, frame
rate, pixel bit depth, and colorimetry. The DCDM image operational levels are defined by the maximum
number of pixels and frame rate.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this
standard. At the time of publication, the editions indicated w
...
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