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Journal of the SMPTE ( Volume: 82, Issue: 3, March 1973)
[ACTIVE]

The Average Picture Level of Some Television Films

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
82, No. 3, pp. 199–201
Abstract
Average picture level (APL) of a film is the integrated optical density or transmission of a full picture frame. Its television correlate is the video signal level averaged over a full frame. This paper reports measurements of samples of television newsfilm, spot commercials and program films. A wide range of APL is reported in all types of films. In terms of optical density, APL of television entertainment films varied from 0.4 to 1.9, with a mean of 0.9 for ten different programs. (The SMPTE Color Reference Test Film has a mean APL of 1.3.) Newsfilm had less variation in APL, ranging from 0.6 to 1.9, with a mean density of 1.1. Film commercials ranged widely in APL, from 0.3 to 2.0. The mean density of 1971 commercials, 0.7, is lower than that of programs or news, and is noticeably lower than it was in 1969. Thus, commercials are noted as having higher APL than programs or newsfilms, and that difference has increased in the past two years.
Publication Date
1973-03-01
DOI
10.5594/J07685
ISSN
Print: 0361-4573
Link
https://doi.org/10.5594/J07685
Author(s)
Daan M. ZwickPhysics Div., Research Laboratories, Eastman Kodak Co., Rochester, NY 14650
Copyright
© 1973 Society of Motion Picture and Television Engineers, Inc.
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Daan M. Zwick; The Average Picture Level of Some Television Films, Journal of the SMPTE ( Volume: 82, Issue: 3, March 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J07685
Snippet:
Daan M. Zwick; The Average Picture Level of Some Television Films, Journal of the SMPTE ( Volume: 82, Issue: 3, March 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J07685

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Daan M. Zwick; The Average Picture Level of Some Television Films, Journal of the SMPTE ( Volume: 82, Issue: 3, March 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J07685
Snippet:
<span class="citation">Daan M. Zwick; <cite>The Average Picture Level of Some Television Films</cite>, Journal of the SMPTE ( Volume: 82, Issue: 3, March 1973); SMPTE, 1973. Available at <a href="https://doi.org/10.5594/J07685" target="_blank" rel="noopener">https://doi.org/10.5594/J07685</a></span>

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Preview:
Daan M. Zwick; The Average Picture Level of Some Television Films, Journal of the SMPTE ( Volume: 82, Issue: 3, March 1973); SMPTE, 1973
doi: 10.5594/J07685
url: https://doi.org/10.5594/J07685
Snippet:
<li>
Daan M. Zwick; <cite id="bib-10-5594-j07685">The Average Picture Level of Some Television Films</cite>, Journal of the SMPTE ( Volume: 82, Issue: 3, March 1973); SMPTE, 1973
<span class="doi">10.5594/J07685</span>
</li>

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