ANSI SMPTE ST 195-2000 Motion-Picture Film (35-mm) - Motion-Picture Prints - Projectable Image Area.pdf
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1、STDmSMPTE 175-ENGL 2000 6357qOL 0004121 847 SMPTE STANDARD for Motion-Picture Film (35-mm) - Motion-Picture Prints - Projectable Image Area SMPTE 195-2000 Revision of ANSISMPTE 195-1993 1 Scope Page 1 of 3 pages -Style A: General theatrical release prints commonly referred to as nonanamotphic or wid
2、e screen; 1.1 This standard specifies the maximum dimen- sions of the film image area intended for projet- tion from a 35-mm motion-picture film and the placement of this area relative to the perfora- tions and the reference edge of the film. 1.2 This standard specifies three types of image areas in
3、tended for theatrical projection (see A.4): - Style B: Theatrical release prints with an anarnor- phicimage; - Style C: Classic theatrical prints. 2 Dimensions The dimensions shall be as given in figure 1 and table 1. REFERENCE EDGE FILM IMAGE AREA I Q INTENDED J - ,I o PRO J ECTABLE I o I A IMAGE A
4、REA K IMAGE AREA DIRECTION _-_- - - E INTENDED IMAGE AREA View as seen through film toward lens Figure 1 - Projectable image area Copyright 8 2oW by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartsdale Ave White Plains, NY 10607 (914) 761-1100 Approved May 30,2000 STDaSMPTE L95-EN
5、GL 2000 8357401, 00041r22 783 H SMPTE 195-2000 Dimensions A B (style A) B (style B) B (style C) C D E F=H J=K *See A.l. NOTES Table 1 - Dimensions Inches 0.825 nom 0.446 min 0.500 rnax 0.690 max 0.602 nom 0.738 ref 0.324 min 1.151 max within 0.012 nominally equal Millimeters 20.96 nom 11.33 min 12.7
6、0 max 17.53 max 15.29 nom 18.75 ref 8.23 min 29.24 max within 0.30 nominallv eaual 1 Projector aperture Dimensions B, D, and E define the image area on the film that is available for projection. They do not define the opening in the projection aperture plate. The size of this opening may differ from
7、 dimensions A and B, for example, because of the physical separation necessary between the aperture plate and the film to avoid scratching the film, the slant of the marginal rays accepted by the projection lens, etc. 2 Actual projected area It is recognized that, in many cases, the actual film imag
8、e area that is projected may be smaller than the Annex A (informative) General information Al Centerlines The centerlines of the image area are given for convenience in interpreting the standard, facilitating such applications as the optical design of equipment, and assisting in the under- standing
9、of suitable mechanical embodiments related to projectable image area. Note that the centerline of the projectable image area is displaced from the centerline of the film by 0.050 in (1.27 mm) nominal. A.2 Related standards SMPTE 59 and ANSVCMPTE 11 1 define image areas for other important phases of
10、motion-picture operations and are projectable maximum and, in some cases, may be nonrec- tangular (for example, an irregular four-sided figure bound by either straight or curved lines). Such departures may recuit from equipment considerations, such as slight incon- sistencies among lenses, screen si
11、zes, etc.; from geometric limitations such as the screen surface being at an angle other than 90“ from the projection axis, or being nonplanar or both; and from aesthetic considerations such as pictorial composition within more restrictive image limits. In the ab- sence of specific instructions to t
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