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1、BRITISH STANDARD BS ISO 2907:2002 Cinematography Maximum projectable image area on 35 mm motion-picture film Position and dimensions ICS 37.060.20 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 2907:2002 This British Standard was p
2、ublished under the authority of the Standards Policy and Strategy Committee on 1 August 2003 BSI 1 August 2003 ISBN 0 580 42373 5 National foreword This British Standard reproduces verbatim ISO 2907:2002 and implements it as the UK national standard. It supersedes BS 5550-3.2.2:1986 which is withdra
3、wn. The UK participation in its preparation was entrusted to Technical Committee CPW/36, Cinematography, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement internat
4、ional publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include
5、all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries
6、 on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank pag
7、e, pages 1 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrol
8、led Copy, (c) BSI Reference number ISO 2907:2002(E) OSI 2002 INTERNATIONAL STANDARD ISO 2907 Third edition 2002-08-15 Cinematography Maximum projectable image area on 35 mm motion-picture film Position and dimensions Cinmatographie Surface maximale projetable pour une image sur film cinmatographique
9、 35 mm Position et dimensions BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:7092 O2002(E) DPlcsid Fremia ihTs PDF file mc yatnoaie nmt deddebyfepca.se Icca ncnadrow eitA hebods licsneilop gnic,y tihs file mirp eb yatniv
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14、al coirypthgis.oc h Web ww.wiso.ch ii ISO 2002 Allr ithgsr esedevr BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:7092 O2002(E) I SO 2002 All irthgs ersedevr iii Foreword ISO (the International Organization for Standardi
15、zation) 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 b
16、e 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 Standa
17、rds are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. 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 Inter
18、national Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent right
19、s. ISO 2907 was prepared by Technical Committee ISO/TC 36, Cinematography. This third edition cancels and replaces the second edition (ISO 2907:1984), which has been technically revised. BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Cop
20、y, (c) BSI blank BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS:7092 O2002(E) I SO 2002 All irthgs ersedevr 1 Cinematography Maximum projectable image area on 35 mm motion-picture film Position and
21、 dimensions 1 Scope This International Standard specifies the maximum dimensions of the film image area intended for projection from a 35 mm motion-picture film and the position of this area relative to the perforations and the reference edge of the film. This International Standard specifies three
22、types of image areas intended for theatrical projection (see A.4 in informative annex A): Style A: general theatrical release prints commonly referred to as non-anamorphic or wide screen; Style B: theatrical release prints with an anamorphic image; Style C: classic theatrical prints. 2 Position and
23、dimensions of image area The dimensions shall be positioned as shown in Figure 1, and as specified in Table 1. NOTE 1 Dimensions B, D, and E define the image area on the film that is available for projection. They do not define the opening in the projection-aperture plate. The size of this opening m
24、ay differ from dimensions A and B, for example, because of the physical separation necessary between the aperture plate and the film to avoid scratching the film, the slant of the marginal rays accepted by the projection lens, etc. NOTE 2 It is recognized that, in many cases, the actual film image a
25、rea that is projected may be smaller than the projectable maximum and, in some cases, may be non-rectangular (for example, an irregular four-sided figure bound by either straight or curved lines). Such departures may result from the following: equipment considerations, such as slight inconsistencies
26、 among lenses, screen sizes, etc.; geometric limitations, such as the screen surface being at an angle other than 90 from the projection axis, or being non- planar or both; aesthetic considerations, such as pictorial composition within more restrictive image limits. In the absence of specific instru
27、ctions to the contrary, it is intended that the actual projected film image area be the largest appropriately shaped figure that can be inscribed within the specified dimensions. BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) B
28、SI IS:7092 O2002(E) 2 I SO 2002 All irthgs ersedevr Key 1 Film image area 2 Projectable image area 3 Direction of film travel 4 Reference edge View as seen through film towards lens. Figure 1 Projectable image area BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+
29、00:00 2006, Uncontrolled Copy, (c) BSI IS:7092 O2002(E) I SO 2002 All irthgs ersedevr 3 Table 1 Dimensions of projectable image area Dimensions mm in A 20,95 0,825 B (style A) 11,32 min.; 12,70 max. 0,446 min.; 0,500 max. B (style B) 17,53 max. 0,690 max. B (style C) 15,29 nom. 0,602 nom. C a 18,75
30、ref. 0,738 ref. D 8,23 min. 0,324 min. E 29,24 max. 1,151 max. F = H within 0,30 within 0,012 J = K approximately equal approximately equal a See A.1. BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:7092 O2002(E) 4 I SO 2
31、002 All irthgs ersedevr Annex A (informative) General Information A.1 Centrelines The centrelines of the image area are given for convenience in interpreting this International Standard, facilitating such applications as the optical design of equipment, and assisting in the understanding of suitable
32、 mechanical embodiments related to the projectable image area. Note that the centreline of the projectable image area is displaced from the centreline of the film by 1,27 mm (0,050 in) nominal. A.2 Related International Standards ISO 23 and ISO 2906 define image areas for other important phases of m
33、otion-picture operations and are consistent with this International Standard and with one another under currently acceptable commercial practices. A.3 Image area for television It is recognized that home television receivers are adjusted to show a distribution of picture sizes ranging downward from
34、the maximum. Guides to picture composition, based upon a statistical survey of receivers in use, are presented in SMPTE RP 27.3. Note that a certain portion of the audience will see the entire transmitted area, but for certainty in presentation of critical information over broadcast television, such
35、 information should be confined to a smaller, central area. A.4 Typical aspect ratios for non-anamorphic theatrical projection For aesthetic and practical reasons, theatrical projection may present 35 mm images in such a manner that the full width of the projectable area is shown but the projected h
36、eight is less than maximum. Photography designed primarily for theatrical exhibition recognizes this and is composed for the more elongated rectangles. Several aspect ratios for the final projected picture are recognized through usage. To help ensure correct vertical centring (framing) of the projec
37、ted image, hard-matte printing may be used in producing the duplicate negative used for release printing of theatrical prints. A hard matte with an image height of at least 12,83 mm (0,505 in) may be used for all style A aspect ratios (1,66:1 or greater). Note that prints intended for a style C aspe
38、ct ratio (1,37:1) will normally have an image height of at least 16,00 mm (0,630 in) as specified in ISO 2906. In all cases, the frame lines on the print shall essentially be opaque. It is recommended that pictures designed to be shown at aspect ratios other than those specified in this Internationa
39、l Standard be so marked in a conspicuous manner. The leader (described in ISO 4241) provides for aspect-ratio identification on frames 29-30. BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:7092 O2002(E) I SO 2002 All irt
40、hgs ersedevr 5 Table A.1 Non-anamorphic aspect ratios Projectable image height Style Aspect ratio mm in A 1,85:1 11,32 min. 0,446 min. A 1,66:1 12,62 ref. 0,497 ref. A 16:9 (1,78:1) 11,78 nom. 0,464 nom. C 1,37:1 15,29 nom. 0,602 nom. NOTE Based on common image width A = 20,95 mm (0,825 in). A.5 Ima
41、ge area on original negative The use of camera-aperture dimensions other than those stated in ISO 2906 is discouraged. Film users are reminded that many features composed for wide-screen aspect ratio will be shown later on television. Use of a hard matte in the camera will require substantial croppi
42、ng of the film horizontally when the film is transferred to television, and severely limits the use of a print made from the negative. Good practice dictates using the 1,37:1 style A camera aperture given in ISO 2906, while composing for the desired theatrical-projection aspect ratio. Care should be
43、 taken to exclude extraneous items or action from the photographed image area which may show in the television scanned area. A.6 Image steadiness The image steadiness can be improved if the reference edge is also the guided edge. BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 2
44、6 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:7092 O2002(E) 6 I SO 2002 All irthgs ersedevr Bibliography 1 ISO 23:1993, Cinematography Camera usage of 35 mm motion-picture film Specifications 2 ISO 491:2002, Cinematography 35 mm motion-picture film and magnetic film Cutting and perforatin
45、g dimensions 3 ISO 2906:2002, Cinematography Image area produced by camera aperture on 35 mm motion-picture film Position and dimensions 4 ISO 2939:2002, Cinematography Picture image area on 35 mm motion-picture release prints Position and dimensions 5 ISO 4241:2001, Cinematography Theatre projectio
46、n leader, trailer and cue marks Specifications 6 ANSI/SMPTE 111-1996, Motion-Picture Film (35-mm) Prints Made on Continuous Contact Printers Exposed Areas for Picture and Audio 7 SMPTE 55-2000, Motion-Picture Film 35- and 16-mm Audio Release Prints Leaders and Cue Marks 8 SMPTE 59-1998, Motion-Pictu
47、re Film (35-mm) Camera Aperture Images and Usage 9 SMPTE 195-2000, Motion-Picture Film (35-mm) Motion-Picture Prints Projectable Image Area 10 SMPTE RP 27.3-1989, Specifications for Safe Action and Safe Title Areas Test Pattern for Television Systems BS ISO 2907:2002 Licensed Copy: sheffieldun sheff
48、ieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank BS ISO 2907:2002 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:15:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 2907:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI
49、 is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI