ISO 4241:2013 pdf download.Cinematography — Projection leader (time-based), trailer and cue marks — Specifications
This International Standard specifies the makeup or assembly at’ time-based leaders and cue marks far 70 mm, 35 mm. and 16 mm motion-picture release prints,
NOTE Extraneous materials are dealt with in AnnczA.
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 printinij rat los 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 16mm 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 o 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 Ejgu.resj. and 5 for orientation of information).
4.3 All frames in the head-leader and traller’leader Identification sections (see 5.3 and Z.3) and In frames 1 through 171 of the head-leader synchronizing section (see £4) shall be masked to the nominal anamorphic projection aperture (20.95 mm (0.825 in) x 17,53 mm (0690 in)] with clear Iramelines nominally the height of anamorphic projection aperture framelines (1.55 mm (0.061 in)). Frames 172 through 2111 of the head-leadersynchronizingsection and frames I through 117 of the trailer-leaderrunout section shall be masked to the nominal anamorphic camera aperture (21,95 mm (0864 in) x 18,59 mm (0,732 in)] with clear frarnelines nominally the height of anamorphic camera-aperture (ramelines 10,41 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).
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.
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.
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, 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 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.ISO 4241 pdf download.ISO 4241-2013 pdf download
