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
Doc Type: Journal Article
Article Type: research-article
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
Link: https://doi.org/10.5594/J14286
Author(s): A. Goetz, F. W. Brown

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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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<li>
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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