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SMPTE 117M PDF
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Motion-Picture Film – Photographic Audio Record – Spectral Diffuse Density
| Published by | Publication Date | Number of Pages | |
| SMPTE | 01/01/2001 | 0 |
SMPTE 117M – Motion-Picture Film – Photographic Audio Record – Spectral Diffuse Density
This standard supplements American National Standards ANSI/NAPM 2.18 and ANSI IT2.19 by specifying spectral conditions suitable for determining the sensitometric characteristics of photographic audio records on three-component subtractive color films having records made up of dye images plus silver or a metallic salt. It does not apply to the density measurement of records composed of dyes only. The conditions of this standard are applicable to systems of audio reproduction using the S-1 photosurface. It is recognized that there are other types of photosurfaces used for photographic audio reproduction that do not fall within the scope of this standard. This standard defines a practical condition by means of which it is expected that most density measurements will be made.
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