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    BS ISO 2907-2003 Cinematography - Maximum projectable image area on 35 mm motion-picture film - Position and dimensions《电影 35mm电影胶片上最大可放映画面区域 位置和尺寸》.pdf

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    BS ISO 2907-2003 Cinematography - Maximum projectable image area on 35 mm motion-picture film - Position and dimensions《电影 35mm电影胶片上最大可放映画面区域 位置和尺寸》.pdf

    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 BS ISO 2907:2002 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 1 August 2003 BSI 1 August 200

    2、3 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 It supersedes BS 5550-3.2.2:1986 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee CPW/36, Cinematography, whic

    3、h 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 international publications referred to in this document may be found in the BSI Catalogue under the section entitled

    4、“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 all the necessary provisions of a contract. Users are responsible for its correct application. Compliance wit

    5、h 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 on the interpretation, or proposals for change, and keep the UK interests informed; monitor related internat

    6、ional 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 page, pages 1 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document i

    7、ndicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 2907:2002(E) OSI 2002INTERNATIONAL STANDARD ISO 2907 Third edition 2002-08-15 Cinematography Maximum projectable image area on 35 mm motion-picture film Position and dimensions

    8、 Cinmatographie Surface maximale projetable pour une image sur film cinmatographique 35 mm Position et dimensions BSISO2907:2002IS: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 ro deewb detu slahl ton i

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    11、dob rebse. It neh lnuikletneve y ttah a lborpem leratign ti ot is fnuo,d lpsaee ifnrom ttneC ehlar Secrteirata at tsserdda eh igleb nevwo. ISO 2002 Athgir lls serevr.de selnUs towrehise specfi,dei trap on fo this ilbupctanoi may cudorper ebtu ro deziliyna ni de fomr yb ro nam y,snae lecetinorc m roe

    12、cinahcal, inclidutohp gnocpoiym dna gnicrfoilm, wittuoh repmissii now nritif gnrom ietreh ISa Ot tserdda ehs lebwo I roSOs membre ydob it neh ctnuoo yrf ttseuqer eh.re ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mial coirypthgis.oc h Web ww

    13、.wiso.ch ii ISO 2002 Allr ithgsr esedevrBSISO2907:2002IS:7092 O2002(E) I SO 2002 All irthgs ersedevr iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is norma

    14、lly 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 th

    15、e 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 3. The main task of technical committees is to prepare

    16、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. Attention is drawn to the possibility that some

    17、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 rights. ISO 2907 was prepared by Technical Committee ISO/TC 36, Cinematography. This third edition cancels and replaces the second edition (ISO

    18、 2907:1984), which has been technically revised. BSISO2907:2002blank BSISO2907:2002INTENRATIONAL TSANDADR IS:7092 O2002(E)I SO 2002 All irthgs ersedevr 1Cinematography Maximum projectable image area on 35 mm motion-picture film Position and dimensions 1 Scope This International Standard specifies th

    19、e 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 types of image areas intended for theatrical projection (see

    20、 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 dimensions of image area The dimensions shall be positioned

    21、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 may differ from dimensions A and B, for example, because of t

    22、he 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 area that is projected may be smaller than the projectable ma

    23、ximum 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 among lenses, screen sizes, etc.; geometric limitations, su

    24、ch 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 instructions to the contrary, it is intended that the actual proje

    25、cted film image area be the largest appropriately shaped figure that can be inscribed within the specified dimensions. BSISO2907:2002IS:7092 O2002(E) 2 I SO 2002 All irthgs ersedevrKey 1 Film image area 2 Projectable image area 3 Direction of film travel 4 Reference edge View as seen through film to

    26、wards lens. Figure 1 Projectable image area BSISO2907:2002IS:7092 O2002(E) I SO 2002 All irthgs ersedevr 3Table 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. 0,6

    27、02 nom. Ca18,75 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. BSISO2907:2002IS:7092 O2002(E) 4 I SO 2002 All irthgs ersedevrAnnex A (informative) General Information A.1 Centrelines The centrelin

    28、es 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 mechanical embodiments related to the projectable image area. Note that the centreline of the

    29、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 motion-picture operations and are consistent with this International Standard and with one anoth

    30、er 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 the maximum. Guides to picture composition, based upon a statistical survey of receivers in use

    31、, 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 information should be confined to a smaller, central area. A.4 Typical aspect ratios for non-a

    32、namorphic 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 height is less than maximum. Photography designed primarily for theatrical exhibition recognizes

    33、 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 projected image, hard-matte printing may be used in producing the duplicate negative used for release

    34、 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 aspect ratio (1,37:1) will normally have an image height of at least 16,00 mm (0,630 in) as specifi

    35、ed 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 International Standard be so marked in a conspicuous manner. The leader (described in ISO 4241) provides fo

    36、r aspect-ratio identification on frames 29-30. BSISO2907:2002IS:7092 O2002(E) I SO 2002 All irthgs ersedevr 5Table 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

    37、1,37:1 15,29 nom. 0,602 nom. NOTE Based on common image width A = 20,95 mm (0,825 in). A.5 Image 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 b

    38、e shown later on television. Use of a hard matte in the camera will require substantial cropping 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 i

    39、n ISO 2906, while composing for the desired theatrical-projection aspect ratio. Care should be 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 i

    40、s also the guided edge. BSISO2907:2002IS:7092 O2002(E) 6 I SO 2002 All irthgs ersedevrBibliography 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 perforating dimensions 3 IS

    41、O 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 projection leader, trailer

    42、 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-Picture Film (35-mm) C

    43、amera 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 BSISO2907:2002blank BSISO2907:2002BS ISO 2907:2002 BSI 389 Chiswic

    44、k High Road London W4 4AL BSI British Standards Institution BSI 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

    45、 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 to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Stand

    46、ard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive

    47、the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-

    48、. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standar

    49、ds through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-. Subscribing members of BSI are kept up to date with s


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