SMPTE ST 59-1998 Motion-Picture Film (35-mm) - Camera Aperture Images and Usage.pdf

1、- STD-SMPTE 59-ENGL 1990. W 8357401 0003LiU4 513 SMPTE STANDARD SMPTE 59-1 998 Revision of ANSI/SMPTE 59-1997 for Motion-Picture Film (35-mm) - t Camera Aperture Images and Usage 1 Scope 1.1 This standard specifies the dimensions of the camera aperture images and the relative positions of the vertic

2、al and horizontal center- lines of the intended image area with respect to the reference edge and the perforations of the camera negative film for 35-mm motion-picture came ras. 1.2 Motion-picture cameras used for different purposes require different aperture sizes. This standard specifies the image

3、 dimensions result- ing from four styles of apertures used for the following purposes: Style A: Four perforations per frame nonanamor- phic sound motion pictures Style 6: Four perforations per frame anamorphic sound motion pictures Style C: Four perforations per frame instrumen- tation photography a

4、nd full-frame motion pictures Style D: Three perforations per frame motion pic- tures 1.3 This standard also specifies the position of the photographic emulsion and the frame rate for 35-mm motion-picture cameras. Page 1 of 5 pages 2 Dimensions The dimensions shall be as specified in figures 1 , 2,

5、and 3 and the tables. They shall apply to meas- urements of the images formed on fresh film, properly exposed and processed. 3 Emulsion position The emulsion shall be toward the camera lens, as shown in figure 4. 4 Frame rate The standard frame rate for motion-picture pho- tography is 24 frames per

6、second. However, it is recognized that nonstandard frame rates are sometimes used for specific applications. For ex- ample, 24, 25, or 30 frames per second may be used for motion pictures intended for television; higher or lower frame rates may be used for spe- cial motion-picture effects and analys

7、is. The use of nonstandard frame rates requires notification and agreement of all parties concerned with the use of the particular film. NOTE -The displacernent of 0.050 in (1.27 mm), dimension G, of the vertical centerline of the image area for styles A and B is in accord with current usage of low-

8、shrinkage film base. However, there are in use many cameras in which the vertical centerline is displaced by 0.055 in (1.40 mrn), which dimension was used prior to the development of low- shrinkage film base. Copyright Q 1998 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Harisdale

9、 Ave., White Plains, NY 10607 (914) 761-1100 Approved October 1,1998 SMPTE 59-1 998 STD-SMPTE 57-ENGL 1778 8357q01 0003405 45T O O E I! II CENTERLINES O IMAGEARE! e I 8 THE INTENOEO O II FILM AS SEEN FROM INSIDE THE CAMERA LOOKING TOWARD CAMERA LENS O REFERENCE EDGE TRAVEL -I Figure 1 - Styles A and

10、 B camera aperture image area Table 1 - Style A specifications Dimensions Inches Millimeters A 0.866 nom 22.0 nom B C D E + 0.02 - 0.00 0.738 k 0.002 18.75 f 0.05 0.305 max 7.75 max 1.171 min 29.74 min F 0.116 nom 2.95 nom G 0.050 nom 1.27 nom H 0.093 f 0.002 2.36 f 0.05 R 0.03 rnax 0.8 max Table 2

11、- Style B specifications + 0.008 18.59 Ir : - 0.000 B I Page 2 of 5 pages STD*SMPTE 57-ENGL 1978 I8357YOL 0003LiOb 37b SMPTE 59-1998 O Ti O LI I 1 LCENTERLINESW THE INTENDED IMAGE AREA i O TRaVEL - ! Figure 2 - Style C camera aperture image area Table 3 - Style C specifications Dimensions Mil I i me

12、ters A C n 24.92 nom 302 18.67 k 0.05 B O. C 0.6b. - 0.002 17.48 k 0.05 D 0.198 max 5.03 max E 1.179 min 29.95 min F 0.009 nom 0.23 nom H 0.093 zk 0.002 2.36 f 0.05 R 0.03 max 0.8 max Page 3 of 5 pages STD-SMPTE 57-ENGL 1798 I8357402 0003g07 222 = CMPTE 59-1998 a i O O FILM I O O - REFERENCE EDGE -

13、RAVEL F Figure 3 - Style D camera aperture image area Table 4 - Style D specifications Dimensions Inches Mil I i meters 0.981 nom 0.546 f 0.002 0.688 f 0.002 0.198 max 1.179 min 0.009 nom 0.020 max 24.92 nom 13.87 f 0.05 17.48 f 0.05 5.03 max 29.95 min 0.23 nom 0.51 max Page 4 of S pages SMWE 59-1998 O O O O o o lo O cl O O 0 O O O 31111 O O O o - REFERENCE MIE TRAVEL 1 Figure 4 - Film viewed from inside camera looking toward camera lens Annex A (informative) Bib1 iog raphy ANSIISMPTE 93-1 998, Motion-Picture Film (35-rnm) - Perforated BH Page 5 of 5 pages