ISO 4241:2013
(Main)Cinematography — Projection leader (time-based), trailer and cue marks — Specifications
Cinematography — Projection leader (time-based), trailer and cue marks — Specifications
ISO 4241:2013 specifies the make-up or assembly of time-based leaders and cue marks for 70 mm, 35 mm and 16 mm motion-picture release prints.
Cinématographie — Amorces, <<trailer>> et <<cue marks>> pour projection (dans le temps) — Spécifications
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INTERNATIONAL ISO
STANDARD 4241
Fourth edition
2013-07-01
Corrected version
2013-08-15
Cinematography — Projection leader
(time-based), trailer and cue marks —
Specifications
Cinématographie — Amorces, <> et <> pour
projection (dans le temps) — Spécifications
Reference number
ISO 4241:2013(E)
©
ISO 2013
---------------------- Page: 1 ----------------------
ISO 4241:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
All rights reserved. Unless 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 the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 4241:2013(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative reference . 1
3 Reduction ratio . 1
4 General specifications . 1
5 Head leader (see Figure 1) . 2
5.1 Protective section . 2
5.2 Splicing frame . 2
5.3 Identification section . 2
5.4 Synchronizing section . 4
5.5 Splicing frame . 6
6 Picture section (see Figure 5) . 7
6.1 Picture . 7
6.2 Motor cue . 7
6.3 Changeover cue . 7
7 Trailer (foot) leader (see Figure 5) . 8
7.1 Splicing frame . 8
7.2 Runout section . 8
7.3 Identification section . 9
7.4 Protective section .10
Annex A (informative) Extraneous materials .11
© ISO 2013 – All rights reserved iii
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ISO 4241:2013(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.
The procedures 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
editorial 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 identified 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 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 title.
iv © ISO 2013 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 4241:2013(E)
Cinematography — Projection leader (time-based), trailer
and cue marks — Specifications
1 Scope
This International Standard specifies the makeup or assembly of time-based leaders and cue marks for
70 mm, 35 mm, and 16 mm motion-picture release prints.
NOTE Extraneous materials are dealt with in Annex A.
2 Normative reference
The 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 undated
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 — Specifications
3 Reduction ratio
The reduction ratio in the production of the head and foot leaders from 35 mm motion-picture film to
16 mm motion-picture film shall be in accordance with ISO 4238.
4 General specifications
4.1 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 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. 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 5.3 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)]. 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 framelines
[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 density greater than 1,95).
© ISO 2013 – All rights reserved 1
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ISO 4241:2013(E)
5 Head leader (see Figure 1)
5.1 Protective section
The 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 to 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 projection 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 leader
5.2 Splicing frame
A single frame with the upright words “SPLICE HERE” and an arrow pointing 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 section
The identification section of the leader 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 reserved
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ISO 4241:2013(E)
Frame 2 — The word “BEG” in clear letters 11,1 mm (7/16 in) high printed upright in 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 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
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 4241
ISO/TC 36
Cinematography — Theatre projection
Secretariat: ANSI
leader, trailer and cue marks —
Voting begins on:
2013-03-25 Specifications
Voting terminates on:
Cinématographie — Amorces, <> et <> pour
2013-05-25
projection en salles — Spécifications
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/FDIS 4241:2013(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2013
---------------------- Page: 1 ----------------------
ISO/FDIS 4241:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
All rights reserved. Unless 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 the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 4241:2013(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative reference . 1
3 Reduction ratio . 1
4 General specifications . 1
5 Head leader (see Figure 1) . 2
5.1 Protective section . 2
5.2 Splicing frame . 2
5.3 Identification section . 2
5.4 Synchronizing section . 4
5.5 Splicing frame . 6
6 Picture section (see Figure 5) . 7
6.1 Picture . 7
6.2 Motor cue . 7
6.3 Changeover cue . 7
7 Trailer (foot) leader (see Figure 5) . 9
7.1 Splicing frame . 9
7.2 Runout section . 9
7.3 Identification section . 9
7.4 Protective section .10
Annex A (informative) Extraneous materials .11
© ISO 2013 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/FDIS 4241:2013(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.
The procedures 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
editorial 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 identified 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 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.
iv © ISO 2013 – All rights reserved
---------------------- Page: 4 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 4241:2013(E)
Cinematography — Theatre projection leader, trailer and
cue marks — Specifications
1 Scope
This International Standard specifies the makeup or assembly of time-based leaders and cue marks for
70 mm, 35 mm, and 16 mm motionpicture release prints.
NOTE Extraneous materials are dealt with in Annex A.
2 Normative reference
The 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 undated
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 — Specifications
3 Reduction ratio
The reduction ratio in the production of the head and foot leaders from 35 mm motion-picture film to
16 mm motion-picture film shall be in accordance with ISO 4238.
4 General specifications
4.1 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 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. 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 5.3 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)]. 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 framelines
[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 density greater than 1,95).
© ISO 2013 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO/FDIS 4241:2013(E)
5 Head leader (see Figure 1)
5.1 Protective section
The 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 to 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 projection 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 leader
5.2 Splicing frame
A single frame with the upright words “SPLICE HERE” and an arrow pointing 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 section
The identification section of the leader 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 reserved
---------------------- Page: 6 ----------------------
ISO/FDIS 4241:2013(E)
Frame 2 — The word “BEG” in clear letters 11,1 mm (7/16 in) high printed upright in 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 “L
...
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