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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 — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPE
Volume
34, No. 1, pp. 26–37
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
ISSN
Print: 0097-5834
Link
https://doi.org/10.5594/J00023
Author(s)
F. W. Roberts
E. TaenzerAce Film Laboratories, Inc., Brooklyn, N. Y.
Copyright
© 1940 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • R. C. A. Mfg. Co., Inc., RCA-Victor Division , “Instructions for Quality Control of Variable-Area Sound-Tracks,” April 25, 1938 . EXTERNAL
  • Baker J. O. Robinson D. H. : “Modulated High-Frequency as a Means of Determining Conditions for Optimal Processing,” J. Soc. Mot. Pict. Eng. , XXX (Jan., 1938 ), p. 3 . EXTERNAL
  • Baker J. O. : “Recording Tests on Some Recent High-Resolution Experimental Emulsions,” J. Soc. Mot. Pict. Eng. , XXX (Jan., 1938 ), p. 18 . EXTERNAL
  • Baker J. O. : “Processing of Ultraviolet Recording on Panchromatic Films,” J. Soc. Mot. Pict. Eng. , XXXI (July, 1938 ), p. 28 . EXTERNAL
  • Blaney A. C. Best G. M. : “Latest Developments in Variable-Area Processing,” J. Soc. Mot. Pict. Eng. , XXXII (March, 1939 ), p. 237 . EXTERNAL
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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
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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

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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>

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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>

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