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Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 1, January 1940)
[ACTIVE]

Photographic Duping of Variable-Area Sound

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
Release print laboratories require a method of quickly making photographic duplicate negatives to replace damaged original negative sections. The paper shows the development of a method of making dupes which have the same optimal print densities as the original negatives. A selection of film stocks is first made using the ratio of transmission between black area and fogs as a “yardstick.” Processing data are shown in a family of curves, and the “best operating point” for the entire process has been determined. Fog considerations have been carried throughout the process. An outline of commercial practice is given together with the necessary routine tests.
Publication Date
1940-01-01
DOI
10.5594/J00023
Link
https://doi.org/10.5594/J00023
Author(s)
F. W. Roberts, E. Taenzer
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J00023.json

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F. W. Roberts and E. Taenzer; Photographic Duping of Variable-Area Sound, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 1, January 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J00023
Snippet:
F. W. Roberts and E. Taenzer; Photographic Duping of Variable-Area Sound, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 1, January 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J00023

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F. W. Roberts and E. Taenzer; Photographic Duping of Variable-Area Sound, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 1, January 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J00023
Snippet:
<span class="citation">F. W. Roberts and E. Taenzer; <cite>Photographic Duping of Variable-Area Sound</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 1, January 1940); SMPTE, 1940. Available at <a href="https://doi.org/10.5594/J00023" target="_blank" rel="noopener">https://doi.org/10.5594/J00023</a></span>

SMPTE Icon SMPTE's HTML Pub

Preview:
F. W. Roberts and E. Taenzer; Photographic Duping of Variable-Area Sound, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 1, January 1940); SMPTE, 1940
doi: 10.5594/J00023
url: https://doi.org/10.5594/J00023
Snippet:
<li>
F. W. Roberts and E. Taenzer; <cite id="bib-10-5594-j00023">Photographic Duping of Variable-Area Sound</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 1, January 1940); SMPTE, 1940
<span class="doi">10.5594/J00023</span>
</li>