Use of Xenon Flashtubes as a Light Source in Color and Black-and-White Scene Testers

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The Cinex Exposure Tester has been widely used for many years to make timing tests from black-and-white negatives. By replacing the incandescent lamp normally found in this tester with a xenon flashtube and its capacitor-discharge power supply, the resulting stable and reproducible light output has allowed the development of a superior testing machine. The exposure gate has been modified to contain a series of neutral density steps matched to the printing machine lights; for subtractive color testing, a selected range of color filters is added to the neutral densities. The resulting intensity-scale tests closely match printing machine exposure times, thereby resolving film reciprocity differences normally present in Cinex tests. These modified units have been used for several years in black-and-white testing with 30-w-sec input to the xenon lamp. By increasing this input to 300 w-sec, the adaptation of the tester to color-scene testing was accomplished.
Publication Date: 1964-10-01
DOI: 10.5594/J07753
Link: https://doi.org/10.5594/J07753
Author(s): Carl W. Hauge, Edward H. Reichard, Leonard L. Sokolow

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Carl W. Hauge, Edward H. Reichard, and Leonard L. Sokolow; Use of Xenon Flashtubes as a Light Source in Color and Black-and-White Scene Testers, Journal of the SMPTE ( Volume: 73, Issue: 10, October 1964); SMPTE, 1964. Available at https://doi.org/10.5594/J07753

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Carl W. Hauge, Edward H. Reichard, and Leonard L. Sokolow; Use of Xenon Flashtubes as a Light Source in Color and Black-and-White Scene Testers, Journal of the SMPTE ( Volume: 73, Issue: 10, October 1964); SMPTE, 1964. Available at https://doi.org/10.5594/J07753

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<span class="citation">Carl W. Hauge, Edward H. Reichard, and Leonard L. Sokolow; <cite>Use of Xenon Flashtubes as a Light Source in Color and Black-and-White Scene Testers</cite>, Journal of the SMPTE ( Volume: 73, Issue: 10, October 1964); SMPTE, 1964. Available at <a href="https://doi.org/10.5594/J07753" target="_blank" rel="noopener">https://doi.org/10.5594/J07753</a></span>

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<li>
Carl W. Hauge, Edward H. Reichard, and Leonard L. Sokolow; <cite id="bib-10-5594-j07753">Use of Xenon Flashtubes as a Light Source in Color and Black-and-White Scene Testers</cite>, Journal of the SMPTE ( Volume: 73, Issue: 10, October 1964); SMPTE, 1964
<span class="doi">10.5594/J07753</span>
</li>