Journal of the Society of Motion Picture Engineers ( Volume: 39, Issue: 12, December 1942)

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Light-Scattering and the Graininess of Photographic Emulsions

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 39, No. 12, pp. 375–383
Abstract: The factors upon which the optical scattering power of a photographic emulsion depend and the relationship of the former to the graininess are investigated by a method that consists in determining the ratio of two average transparencies (T1/T2) of a moving emulsion sample of uniform density with a micro-photometric device integrating simultaneously over a large (T1) and a small (T2) section of the sample. The variation of the scattering power (defined as T1/T2) with the density is determined (a) for negative emulsions: the finer grain has the larger T1/T2; (b) for a positive emulsion directly exposed and printed through various types of negative emulsions: T1/T2 is independent of the resulting graininess; (c) for positive emulsions printed with white and ultraviolet light: T1/T2 is not affected by the wavelength of the printing light; (d) for a positive emulsion with varying gamma (0.44 to 2.5): no influence upon T1/T2 by gamma is observed.
Publication Date: 1942-12-01
DOI: 10.5594/J14286
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J14286
Author(s): A. Goetz
F. W. Brown
Copyright: © 1942 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 Goetz A. Gould W. O. : “The Objective Quantitative Determination of the Graininess of Photographic Emulsions,” J. Soc. Mot. Pict. Eng. , XXIX (Nov., 1937 ), p. 510 . EXTERNAL
2 Gould W. O. Goetz A. Dember A. : “An Instrument for the Objective and Quantitative Determination of Photographic Graininess,” Phys. Rev. , 54 ( 1938 ), p. 240 . EXTERNAL
3 Goetz A. Gould W. O. Dember A. : “An Instrument for the Absolute Measurement of the Graininess of Photographic Emulsions,” J. Soc. Mot. Pict. Eng. , XXXIII (Oct., 1939 ), p. 469 . EXTERNAL
4 Gobtz A. Gould W. O. Dember A. : “The Objective Measurement of the Graininess of Photographic Emulsions,” J. Soc. Mot. Pict. Eng. , XXXIV (March, 1940 ), p. 279 . EXTERNAL
5 Threadgold S. D. : “Phot. Ind.” , 72 ( 1932 ), p. 348 . EXTERNAL
6 Eggert J. Kuester A. : “Veroeff. Agfa” , III ( 1933 ), p. 93 ;. IV (1935), p. 49; H. Brandes, Ibid., IV (1935), p. 57. EXTERNAL
7 Narath A. : “Kinotechnik” , XVI ( 1934 ), pp. 255 , 287 . EXTERNAL

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A. Goetz and F. W. Brown; Light-Scattering and the Graininess of Photographic Emulsions, Journal of the Society of Motion Picture Engineers ( Volume: 39, Issue: 12, December 1942); SMPTE, 1942. Available at https://doi.org/10.5594/J14286

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A. Goetz and F. W. Brown; Light-Scattering and the Graininess of Photographic Emulsions, Journal of the Society of Motion Picture Engineers ( Volume: 39, Issue: 12, December 1942); SMPTE, 1942. Available at https://doi.org/10.5594/J14286

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<span class="citation">A. Goetz and F. W. Brown; <cite>Light-Scattering and the Graininess of Photographic Emulsions</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 39, Issue: 12, December 1942); SMPTE, 1942. Available at <a href="https://doi.org/10.5594/J14286" target="_blank" rel="noopener">https://doi.org/10.5594/J14286</a></span>

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A. Goetz and F. W. Brown; <cite id="bib-10-5594-j14286">Light-Scattering and the Graininess of Photographic Emulsions</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 39, Issue: 12, December 1942); SMPTE, 1942
<span class="doi">10.5594/J14286</span>
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