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Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 5, May 1946)
[ACTIVE]

Sensitometric Evaluation of Reversible Color Film

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
Two considerations are involved in the sensitometric evaluation of reversible color film; we are interested in determining the gray-scale characteristics of the material, as well as its faithfulness of color rendition. Equations have been derived relating the equivalent densities of the 3 layers to the color densitometer readings. The 3 curves showing equivalent densities as functions of log exposure indicate speeds, contrasts, maximum densities, and color balance of the film. Color rendition problems are investigated using the principles of colorimetry. The equivalent densities of a reproduction depend upon the spectral sensitivities of the material as well as the spectral characteristics of the light source and color sample; the color of the reproduction, however, depends not only upon the equivalent densities but also upon the spectral characteristics of the dyes and of the projection source. A typical problem is that of the effect of change of contrast upon the color renditions. Unit contrast, although giving lighter reproductions, involves saturation errors which are prohibitive. A contrast of 1.5 is found to more nearly balance the errors of lightness, hue and saturation.
Publication Date
1946-05-01
DOI
10.5594/J11833
Link
https://doi.org/10.5594/J11833
Author(s)
Ronald H. Bingham
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Ronald H. Bingham; Sensitometric Evaluation of Reversible Color Film, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 5, May 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J11833
Snippet:
Ronald H. Bingham; Sensitometric Evaluation of Reversible Color Film, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 5, May 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J11833

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Ronald H. Bingham; Sensitometric Evaluation of Reversible Color Film, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 5, May 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J11833
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<span class="citation">Ronald H. Bingham; <cite>Sensitometric Evaluation of Reversible Color Film</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 5, May 1946); SMPTE, 1946. Available at <a href="https://doi.org/10.5594/J11833" target="_blank" rel="noopener">https://doi.org/10.5594/J11833</a></span>

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Preview:
Ronald H. Bingham; Sensitometric Evaluation of Reversible Color Film, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 5, May 1946); SMPTE, 1946
doi: 10.5594/J11833
url: https://doi.org/10.5594/J11833
Snippet:
<li>
Ronald H. Bingham; <cite id="bib-10-5594-j11833">Sensitometric Evaluation of Reversible Color Film</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 5, May 1946); SMPTE, 1946
<span class="doi">10.5594/J11833</span>
</li>