The Effect of Automatic Black Level Control on the Quality of Television Film Images

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 82, No. 10, pp. 835–837
Abstract: Observers judged the quality of the display of 63 different color film commercials as a function of the black-level control used. For two commonly used telecine cameras, use of the standard automatic black-level (ABL) mode resulted in a significant reduction in picture quality, compared with use of the manual mode, unattended (UMB). Excessive picture contrast and loss of shadow detail, as well as occasional darkening of middle tones, were observed. A change in ABL circuitry in one camera resulted in some improvement. A test of a newer camera showed that the ABL circuitry in that camera did not degrade picture quality. As a result of this test it is suggested that, if the telecine camera is properly set up, use of the unattended manual black mode should be considered in preference to use of ABL control.
Publication Date: 1973-10-01
DOI: 10.5594/J08141
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J08141
Author(s): Daan M. ZwickResearch Laboratories, Eastman Kodak Co., Rochester, NY 14650
Copyright: © 1973 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

The Kodak Cross-Step Gray-Scale Slide for Telecine [Active]
Improved Telecine Image Quality: The Influence of Black Level [Active]
Performance of Automatic Black Level Control in Telecine Systems [Active]
Correlation of the Television Film Preview Room with Closed-Circuit Telecine Systems [Active]
5. Zwick D. M. , “Color balance and density variations of color films intended for television,” Jour. SMPTE , 80 : 89 – 93 , Feb. 1971 . EXTERNAL

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J08141.json

Reference Tree

Explore all references and references to this document, as a navigable tree.

Open Reference Tree

Reference this Doc

Plain text (ISO 690 compliant)

Preview:

Daan M. Zwick; The Effect of Automatic Black Level Control on the Quality of Television Film Images, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J08141

Snippet:

Daan M. Zwick; The Effect of Automatic Black Level Control on the Quality of Television Film Images, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J08141

HTML (ISO 690 compliant)

Preview:

Snippet:

<span class="citation">Daan M. Zwick; <cite>The Effect of Automatic Black Level Control on the Quality of Television Film Images</cite>, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973. Available at <a href="https://doi.org/10.5594/J08141" target="_blank" rel="noopener">https://doi.org/10.5594/J08141</a></span>

SMPTE's HTML Pub

Preview:

Daan M. Zwick; The Effect of Automatic Black Level Control on the Quality of Television Film Images, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973
doi: 10.5594/J08141
url: https://doi.org/10.5594/J08141

Snippet:

<li>
Daan M. Zwick; <cite id="bib-10-5594-j08141">The Effect of Automatic Black Level Control on the Quality of Television Film Images</cite>, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973
<span class="doi">10.5594/J08141</span>
</li>

Referenced By

Improved Telecine Image Quality: The Influence of Black Level [Active]