Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932)

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The Duplication of Motion Picture Negatives

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 19, No. 1, pp. 891–908
Abstract: In 1926, Capstaff and Seymour1 published a paper giving directions for making duplicate negatives using a new film manufactured specifically for that purpose. Good quality and tone reproduction were possible by this method although the graininess of exhibition prints was not entirely satisfactory. Since then, improved films have been available, and the present paper contains a description of the tests performed during a search for the most satisfactory sensitive materials and processing technic. The experiments showed that in order to minimize graininess, the master positive must be developed to a relatively high gamma (1.85) in a positive developer, and the duplicate negative to a correspondingly low gamma (0.55 or less). There are also given data which explain why the high gamma master positive in conjunction with a low gamma duplicate negative gives the most satisfactory graininess.
Publication Date: 1932-07-01
DOI: 10.5594/J05502
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J05502
Author(s): J. I. Crabtree
C. H. SchwingelResearch Laboratories, Eastman Kodak Co., Rochester, N. Y.
Copyright: © 1932 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

A Replenishing Solution for a Motion Picture Positive Film Developer [Active]
1 Capstaff J. G. Seymour M. W. : “The Duplication of Motion Picture Negatives,” Trans. Soc. Mot. Pict. Eng. ( 1926 ), No. 28 , p. 223 . EXTERNAL
2 Ives C. E. Huse E. : “Notes on Making Duplicate Negatives,” Trans. Soc. Mot. Pict. Eng. ( 1928 ), No. 34 , p. 382 . EXTERNAL
3 Crabtree J. I. : “The Graininess of Motion Picture Film,” Trans. Soc. Mot. Pict. Eng. ( 1927 ), No. 24 , p. 77 . EXTERNAL
4 Capstaff J. G. Purdy R. A. : “A Compact Motion Picture Densitometer,” Trans. Soc. Mot. Pict. Eng. ( 1927 ), No. 31 , p. 607 . EXTERNAL
6 Crabtree J. I. Carlton H. C. : “Some Properties of Fine Grain Developers for Motion Picture Film,” Trans. Soc. Mot. Pict. Eng. ( 1929 ), No. 38 , p. 406 . EXTERNAL
7 Mees C. E. K. : “Fundamentals of Photography,” Eastman Kodak Co. , Rochester, N. Y. ( 1931 ), Chapter VIII. EXTERNAL
8 Neblette C. B. : “Photography—Principles and Practice,” D. Van Nostrand Co., Inc. , New York, N. Y. ( 1930 ), Chapter IX. EXTERNAL
9 Carlton H. C. Crabtree J. I. : “Cleaning Liquids for Motion Picture Film,” Trans. Soc. Mot. Pict. Eng. ( 1927 ), No. 30 , p. 277 . EXTERNAL

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J. I. Crabtree and C. H. Schwingel; The Duplication of Motion Picture Negatives, Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932); SMPTE, 1932. Available at https://doi.org/10.5594/J05502

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J. I. Crabtree and C. H. Schwingel; The Duplication of Motion Picture Negatives, Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932); SMPTE, 1932. Available at https://doi.org/10.5594/J05502

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<span class="citation">J. I. Crabtree and C. H. Schwingel; <cite>The Duplication of Motion Picture Negatives</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932); SMPTE, 1932. Available at <a href="https://doi.org/10.5594/J05502" target="_blank" rel="noopener">https://doi.org/10.5594/J05502</a></span>

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<li>
J. I. Crabtree and C. H. Schwingel; <cite id="bib-10-5594-j05502">The Duplication of Motion Picture Negatives</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932); SMPTE, 1932
<span class="doi">10.5594/J05502</span>
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