1、BSI Standards PublicationBS ISO 4241:2013Cinematography Projectionleader (time-based), trailer andcue marks SpecificationsIncorporating corrigendum August 2015BS ISO 4241:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 4241:2013. Itsupersedes BS ISO 4241:2
2、001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee CPW/36, Cinematography.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a con
3、tract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 91445 4ICS 37.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the auth
4、ority of theStandards Policy and Strategy Committee on 31 July 2013.Amendments/corrigenda issued since publicationDate Text affected31 August 2015 The ISO corrected text 15 August 2013incorporates a change of the title ISO 2013Cinematography Projection leader (time-based), trailer and cue marks Spec
5、ificationsCinmatographie Amorces, et pour projection (dans le temps) SpcificationsINTERNATIONAL STANDARDISO4241Fourth edition2013-07-01Reference numberISO 4241:2013(E)Corrected version2013-08-15ISO 4241:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. U
6、nless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at th
7、e address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 4241:2013ISO 4241:2013(E) ISO 2013 All rights reserved iiiContents
8、PageForeword iv1 Scope . 12 Normative reference . 13 Reduction ratio . 14 General specifications . 15 Head leader (see Figure 1) . 25.1 Protective section . 25.2 Splicing frame 25.3 Identification section . 25.4 Synchronizing section . 45.5 Splicing frame 66 Picture section (see Figure 5) 76.1 Pictu
9、re 76.2 Motor cue . 76.3 Changeover cue 77 Trailer (foot) leader (see Figure 5) . 87.1 Splicing frame 87.2 Runout section 87.3 Identification section . 97.4 Protective section 10Annex A (informative) Extraneous materials .11BS ISO 4241:2013ISO 4241:2013(E)ForewordISO (the International Organization
10、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 t
11、he 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.The proc
12、edures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editori
13、al rules of the ISO/IEC Directives, Part 2. www.iso.org/directives.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights ident
14、ified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patents.Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible
15、 for this document is ISO/TC 36, Cinematography.This fourth edition cancels and replaces the third edition (ISO 4241:2001), of which it constitutes a minor revision.Annex A of this International Standard is for information only.This corrected version of ISO 4241:2013 incorporates a change of the tit
16、le.iv ISO 2013 All rights reservedBS ISO 4241:2013INTERNATIONAL STANDARD ISO 4241:2013(E)Cinematography Projection leader (time-based), trailer and cue marks Specifications1 ScopeThis International Standard specifies the makeup or assembly of time-based leaders and cue marks for 70 mm, 35 mm, and 16
17、 mm motion-picture release prints.NOTE Extraneous materials are dealt with in Annex A.2 Normative referenceThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For un
18、dated references, the latest edition of the referenced document (including any amendments) applies.ISO 4238:1976, Cinematography Optical printing ratios for enlargement and reduction of motion-picture film images Specifications3 Reduction ratioThe reduction ratio in the production of the head and fo
19、ot leaders from 35 mm motion-picture film to 16 mm motion-picture film shall be in accordance with ISO 4238.4 General specifications4.1 Orientation and dimensions of letters and numerals in this International Standard are with respect to 35 mm motion-picture films and are modified proportionally in
20、accordance with ISO 4238 for 70 mm and 16 mm prints.4.2 Information appearing in the leader which is printed lengthwise (in the direction of film travel) shall read from left to right when viewed from the projection lens towards the projector light source with the head end of the film at the right.
21、Information appearing in the leader which is printed upright shall read normally when the reel is uppermost and the head of the film hangs down ready for threading (see Figures 1 and 5 for orientation of information).4.3 All frames in the head-leader and trailer-leader identification sections (see 5
22、.3 and 7.3) and in frames 1 through 171 of the head-leader synchronizing section (see 5.4) shall be masked to the nominal anamorphic projection aperture 20,95 mm (0,825 in) 17,53 mm (0,690 in) with clear framelines nominally the height of anamorphic projection aperture framelines 1,55 mm (0,061 in).
23、 Frames 172 through 218 of the head-leader synchronizing section and frames 1 through 87 of the trailer-leader runout section shall be masked to the nominal anamorphic camera aperture 21,95 mm (0,864 in) 18,59 mm (0,732 in) with clear framelines nominally the height of anamorphic camera-aperture fra
24、melines 0,41 mm (0,016 in).4.4 Because many types of film may be used for leaders, exact neutral densities have not been specified. For the purpose of this International Standard, the following approximate neutral densities are referred to: clear (neutral density less than 0,35); black (neutral dens
25、ity greater than 1,95). ISO 2013 All rights reserved 1BS ISO 4241:2013ISO 4241:2013(E)5 Head leader (see Figure 1)5.1 Protective sectionThe protective section of the leader shall consist of a minimum of 2,44 m (8 linear feet) of transparent or raw stock. When the protective leader has been reduced t
26、o a length of 1,83 m (6 linear feet), it shall be restored to its original length. Logos, trademarks, part titles, or other extraneous materials, if absolutely necessary, should be placed in this section.NOTE 1 Repeats frames 44 through 58 of Synchronizing Section.NOTE 2 Film shown as viewed from pr
27、ojection lens towards projector light source.NOTE 3 Cross-hatched frames represent a black background with clear images; non-cross-hatched frames represent a clear background with black images.Figure 1 Head leader5.2 Splicing frameA single frame with the upright words “SPLICE HERE” and an arrow poin
28、ting to the frameline between this frame and frame 1 of the identification section to indicate where the protective section joins the identification section. The clear letters should be at least 3,2 mm (1/8 in) high on a black background.5.3 Identification sectionThe identification section of the le
29、ader shall be 43 frames in length. The identification section of the head leader, when viewed as specified in 4.2, shall be made up as follows:Frame 1 Black.2 ISO 2013 All rights reservedBS ISO 4241:2013ISO 4241:2013(E)Frame 2 The word “BEG” in clear letters 11,1 mm (7/16 in) high printed upright in
30、 the centre of the frame, on a black background.Frame 3 Black.Frame 4 The word “of” in clear letters 2,4 mm (3/32 in) high printed lengthwise in the centre of the frame, on a black background.Frame 5 Black.Frame 6 The words “Subject”, “Reel No.”, and “Language” in clear letters 2,4 mm (3/32 in) high
31、 printed lengthwise, on a black background.Frame 7 Black.Frame 8 The words “Length”, “Titles”, and “Track” with clear letters 2,4 mm (3/32 in) high printed lengthwise, on a black background.Frames 9-10 Black.Frame 11 The words “Lab”, “Company”, and “Prod No.” with clear letters 2,4 mm (3/32 in) high
32、 printed lengthwise, on a black background.Frame 12 The word “HEAD” in black letters nominally 9,5 mm (3/8 in) high printed upright in the centre of the frame, on clear background.Frame 13 A 1/8 in (3,2 mm) diameter black dot in the centre of the frame on a clear background.Frame 14 The word “PICTUR
33、E” in black letters nominally 9,5 mm (3/8 in) high printed upright in the centre of the frame, on a clear background.Frames 15-16 Two frames in which the words “SMPTE Projection Leader” in clear letters are printed upright on a black background. The letters shall not be less than 3,2 mm (1/8 in) hig
34、h.Frame 17 Four letter “X”s, printed in a lengthwise line adjacent to the 35 mm analog photographic audio record, approximately 7,9 mm (5/16 in) from the 35 mm camera aperture centreline towards the 35 mm analog photographic audio record. Letters shall be clear, 3,2 mm (1/8 in) high and 3,2 mm (1/8
35、in) wide, on a black background.Frames 18-19 Same as frames 15-16.Frames 20-23 Same as frames 3-6.Frame 24 Black.Frames 25-26 The words “Special Data” with clear letters 2,4 mm (3/32 in) high printed lengthwise along the edge of the frame opposite the sound track area, on a black background, startin
36、g in the 26th frame.Frames 27-28 Black.Frames 29-30 The words “Aspect Ratio”, “Sound Type”, and “Frame Rate” with clear letters 2,4 mm (3/32 in) high printed lengthwise, on a black background, starting in the 30th frame and in three separate lengthwise lines.Frames 31-32 Black.Frame 33 The words “16
37、 mm”, “Wind”, “A”, and “B” with clear letters 2,4 mm (3/32 in) high printed lengthwise, on a black background.Frame 34 Black.Frame 35 The words “16 mm”, “Kelvin”, “3200”, and “5400” with clear letters 2,4 mm (3/32 in) high printed lengthwise, on a black background. ISO 2013 All rights reserved 3BS I
38、SO 4241:2013ISO 4241:2013(E)Frames 36-43 Black.5.4 Synchronizing section5.4.1 The synchronizing section of the leader shall be 218 frames in length.5.4.2 The words and numerals indicating 16-frame units in the synchronizing section shall have the vertical dimension of the 1,85:1 projection aperture
39、11,3 mm (0,446 in). The orientation of the words and numerals shall be upright. These frames (27, 43, 59, 75, 91, 107, 123, 139, 155, and 171) shall have dashed lines to indicate the 1,37:1 projection aperture height 15,29 mm (0,602 in).5.4.3 The synchronizing section, when viewed as specified in 4.
40、2, shall be made up as follows:Frame 1 The 16 mm sound indication; the numeral “16” printed lengthwise in clear letters on a black background on both sides of a clear horizontal line with a clear dot of 3,2 mm (1/8 in) diameter in the centre of the frame (as shown in Figure 2). The line shall extend
41、 to the edges of the frame. This frame is repeated every 16 frames to frame 129. Frame 1 shall also contain the words “SOUND START” printed lengthwise in clear letters 3,2 mm (1/8 in) high on a black background (see Figure 2).Figure 2 16 mm sound-start identification frameFrames 2-6 Black.Frame 7 Th
42、e 35 mm sound indication; the numeral “35” printed lengthwise in clear letters on a black background on both sides of a clear horizontal line with a clear diamond at least 4,76 mm 4,76 mm (3/16 in) in the centre of the frame (as shown in Figure 3). The line shall extend to the edges of the frame. Th
43、is frame is repeated every 16 frames to frame 135. Frame 7 shall also contain the words “SOUND START” printed lengthwise in clear letters 3,2 mm (1/8 in) high on a black background (see Figure 3).4 ISO 2013 All rights reservedBS ISO 4241:2013ISO 4241:2013(E)Figure 3 35 mm sound-start identification
44、frameFrames 8-16 Black.Frame 17 Same as frame 1.Frames 18-22 Black.Frame 23 Same as frame 7.Frames 24-26 Black.Frame 27 The words “PICTURE START” printed upright in black on a clear background. The letters shall be 4,8 mm (3/16 in) high. The total vertical dimensions of the words shall be as describ
45、ed in 5.4.2. Visual countdown begins with this frame.Frames 28-32 Black.Frame 33 Same as frame 1.Frames 34-38 Black.Frame 39 Same as frame 7.Frames 40-42 Black.Frame 43 The numeral “11” printed upright in black on a clear background, with dimensions as described in 5.4.2.Frames 44-48 Black.Frame 49
46、Same as frame 1.Frame 50 Black.Frame 51 The 70 mm sound indication; the numeral “70” printed lengthwise in clear letters on a black background on both sides of a clear horizontal line with a clear circle of 9,5 mm (3/8 in) diameter within a clear square 9,5 mm 9,5 mm (3/8 in) in the centre of the fr
47、ame (as shown in Figure 4). This frame is repeated every 16 frames to frame 131. Frame 51 shall also contain the words “SOUND START” printed lengthwise in clear letters 3,2 mm (1/8 in) high on a black background (see Figure 4). ISO 2013 All rights reserved 5BS ISO 4241:2013ISO 4241:2013(E)Figure 4 7
48、0 mm sound-start identification frameFrames 52-54 Black.Frame 55 Same as frame 7.Frames 56-58 Black.Frame 59 The numeral “10” printed upright in black on a clear background, with dimensions as described in 5.4.2.Frames 60-139 Continuation of the sequence described from frame 44 to frame 59, inclusiv
49、e, with the 16-frame units counting down. The numeral “9” shall be superscripted with the word “Nine”. The numeral “6” shall be subscripted with the word “Six”.Frames 140-144 Black.Frames 145-152 Eight frames labelled with clear arrows in frames 145 and 152 and the words “Control Test” printed lengthwise in clear letters on a black background to indicate the position in the leader where one to eight frame
