1、INTERNATIONAL STANDARD ISO 490 Second edition 1993-06-0 1 Cinematography - Magnetit stripes and magnetic recording head gaps for Sound record on 16 mm motion-picture film perforated along one edge (Type 1) - Positions and width dimensions Cin6ma tographie - Pistes magnetiques et en trefers de tetes
2、mag,s , 0 006 0,006 0,573 f 0,002 0,092 * 0,004 0,085 5 0,004 0,628 I 1) When it is desired to employ a Single head for the dual function of recording and re- producing, the universal head dimensions shall apply. ISO 490:1993(E) 5 Film projection Speed 6 Longitudinal picture-Sound displacement The r
3、ecording should be made in accordance with ISO 1188 so that the Sound record will reproduce The magnetic Sound record on the film shall precede the centre of the corresponding picture by a distance properly at the projection Speeds indicated for the applications specified in table 2. of 28 + 1 frame
4、s, and preferably by 28 + 0,5 frames. - a distance of Table 2 - Film projection Speed Application A. Primary Standards 1) Cinematography 2) Television - for 50 Hz supplies - for 60 Hz supplies B. Secondary Standards (non-professional use) cm/s 18,3 19,05 18,3 13,716 27 18) ft/min Frames or perforati
5、ons per second 36 37,5 36 24 25 24 I 1) It is recognized that some equipment is available and in use which operates at 16 frames per second. 3 This page intentionally left blank This page intentionally left blank ISO 490:1993(E) UDC 778.534.455i771.531.352 Descriptors: cinematography, motion-picture film, motion-picture film 16 mm, Sound recording, magnetic recording, record magnetic heads, air gaps, Position (location), dimensions, width. ing tracks, Price based on 3 pages
