This standard applies to 35mm film with a 1:1.66 aspect ratio. This standard specifies the position and size of 35mm film negatives and release film images. GB 5298-1985 Position and size of 35mm film negatives GB5298-1985 Standard download decompression password: www.bzxz.net
This standard applies to 35mm film with a 1:1.66 aspect ratio. This standard specifies the position and size of 35mm film negatives and release film images.

1 Scope of application National Standard of the People's Republic of China Image area on 35mm motion-films with masked picture Positlons and dimeasions UDC T78.534 GB 5298—85 1.1 This standard applies to 35mm motion-films with masked picture aspect ratio of 1:1.66. 1.2 This standard specifies the positions and dimensions of the frames of 35 mm motion picture film and release films. 2 Position and dimensions of the frames See Figures 1, 2 and 1 and Table 2 for the positions and dimensions of the frames. Note the direction of the objective lens, the emulsion side is behind the viewer. National Bureau of Standards 1985-08-25 Issued
1986-04-01 Implementation
Center of the screen
Direction of film movement
A Maximum value
One sign test value
D Minimum value
E Minimum value
R Maximum value
J=Reference
GB 5298-85
Surface area on photographic negative, mm
13.25 - 0. 12
Direction of light beam
—reference
Figure 2 Frame area of ​​35 mm motion picture release film. Direction of projector light source as indicated by arrow, emulsion side facing inwards to observer. Table 2
8. Reference values
C. Reference values
D. General
E. Minimum values
R. Maximum values
JI-KI. Reference values
Frame area on release film, mm
13.25 - 0. 12
iKAoNiKAca
Markings for masking films
GB 2$B—85wwW.bzxz.Net
3.1 According to the provisions of 2.3.1d in G2926-82 "Technical Specifications for Titles and Ends for 35mm and 16mm Film Distribution", the aspect ratio of the projection frame (1:1.66) should be indicated in the title identification section. 3.2 On the box label of the distribution film, it should be marked "Masked Film (1:1,66)" Note: When this type of masked film is shown in a state-standard projection unit, a suitable short-focal-length projection lens must be used instead of a standard-focal-length projection lens to give full play to its wide-angle effect.
Additional Notes:
This standard was proposed by the Ministry of Culture of the People's Republic of China and was approved by the China Film Science and Technology Research Institute of the Ministry of Culture. The China Film Science and Technology Research Institute of the Ministry of Culture is responsible for drafting this standard. The main drafter of this standard is Shao Ming.
This standard is entrusted to the China Film Science and Technology Research Institute of the Ministry of Culture for interpretation.
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