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ISO 4241-2013 pdf free download
ISO 4241-2013 pdf free download.Cinematography Theatre projection leader, trailer and cue marks Specifications
Cinématographie — Amorces, <<trailer>> et <<cue marks>> pour projection en salles — Specifications.
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 for orientation of information).
4.3 All frames in the head-leader and trailer-leader identification sections (see £3 and 7.3) and in frames I through 171 of the head-leader synchronizing section (see £4) shall be masked to the nominal anamurphic projection aperture [20,95 mm (0,825 in) x 17,53 mm (0690 in)1 with clear framelines nominally the height of anamorphic projection aperture framelines 11,55 mm (0.061 in)J. 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) x 18,59 mm (0,732 in)] with clear framelines nominally the height of anamorphic caniera-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),
5.2 Splicing frame
A single frame with the upright words SPL!CE HERE’ and an arrow pointing to the frameline between this frame and frame I 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 42. shall be made up as follows:
Frame 1 — Black.ISO 4241-2013 pdf free download.
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