ISO 69:1998 pdf download – Cinematography – 16 mm motion-picture and magnetic film – Cutting and perforating dimensions
1 Scope
This International Standard specifies the cutting and perforating dimensions for 1 6 mm motion-picture and magnetic films with one or two rows of perforations for the following two categories:
a) 1 6 mm motion-picture and magnetic films;
b) manufacturer-designated 1 6 mm professional motion-picture camera films with tighter tolerances.
This International Standard applies to safety raw stock film as described in ISO 543.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 543:1 990, Photography — Photographic films — Specifications for safety film.
ISO 544:1 976, Standard atmospheres for conditioning and/or testing — Specifications.
3 Dimensions
3.1 The dimensions and tolerances shall be as given in table 1 and in the accompanying figures 1 to 4, and apply to safety raw stock film as described in ISO 543. The dimensions shall apply at the time of cutting and perforatingfor film adjusted to a temperature of 23 °C ± 1 °C and a relative humidity of (50 ± 2) %,which is the recommended atmosphere for conditioning and/or testing with reduced tolerances specified in ISO 554.
NOTES
1 If required by usage, the manufacturer may indicate other atmospheric conditions which applied to the dimensional control and testing at the time of cutting and perforating.
2 This International Standard is based on values adopted for film defined as “low-shrinkage”. See annex A, clause A.3 for definition of “low-shrinkage”.
3.2 The dimensions and tolerances of 1 6 mm full-coat magnetic materials at the time of cutting and perforating shall be as specified by dimensions B’ and L’ in table 1 .
4 Identification of reference edge for guiding
4.1 For film perforated along one edge, the edge adjacent to the perforation is the reference edge.
4.2 For film perforated along two edges, the reference edge shall be identified by the winding of the film. With the film wound emulsion-in, and the roll of film unwinding downwards toward the observer, the reference edge is along the right-hand side of the film (see figure 5).
4.3 The sequential edge numbers (key numbers or footage numbers) are exposed by the film manufacturer along the reference edge of the film.