A New Color Attenuation System for Motion-Picture Printing

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The use of subtractive color filters immersed in a suitable liquid is described for use as light attenuators in motion-picture printing. This system results in greater availability of light, and, by immersing gelatin filters in a liquid, all their surface-generated detrimental effects are efficiently eliminated. Surface scratches, inter-reflections, and other surface defects no longer have any noticeable effect. A filter pack can be made up with a greater number of filters than heretofore possible, as long as all filter surfaces are separated by liquid layers. The use of the liquid also makes it possible to apply precise matrix coefficient computation for the transformation of additive printer-light points for any given color balance into corresponding immersed filter packs having a very high degree of precision. The use of this light attenuation system is particularly attractive for application in optical-effects printers, but it can be applied, in principle, to any subtractive printer lamphouse. Automated and computerized versions of this system are in preparation.
Publication Date: 1978-10-01
DOI: 10.5594/J16660
Link: https://doi.org/10.5594/J16660
Author(s): John H. Lewis

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John H. Lewis; A New Color Attenuation System for Motion-Picture Printing, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J16660

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John H. Lewis; A New Color Attenuation System for Motion-Picture Printing, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J16660

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John H. Lewis; A New Color Attenuation System for Motion-Picture Printing, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J16660

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<span class="citation">John H. Lewis; <cite>A New Color Attenuation System for Motion-Picture Printing</cite>, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978. Available at <a href="https://doi.org/10.5594/J16660" target="_blank" rel="noopener">https://doi.org/10.5594/J16660</a></span>

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John H. Lewis; A New Color Attenuation System for Motion-Picture Printing, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978
doi: 10.5594/J16660
url: https://doi.org/10.5594/J16660

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<li>
John H. Lewis; <cite id="bib-10-5594-j16660">A New Color Attenuation System for Motion-Picture Printing</cite>, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978
<span class="doi">10.5594/J16660</span>
</li>