Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 32, September 1927)

[ACTIVE]

A Trial and Error Method of Preparing a Motion Picture Sensitometer Tablet

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Volume: 11, No. 32, pp. 740–749
Abstract: In motion picture film laboratories sensitometers or timing machines frequently are employed for accurately determining the printing exposure required by the various scenes of a negative. One type of sensitometer consists essentially of a printing machine which exposes the negative onto positive film through a tablet made of areas of uniform density (each the size of a single motion picture frame) and of increasing density from one end of the tablet to the other. The density of the various steps of the tablet is such that with the proper time of exposure the positive film receives exposures over a distance of nine or more frames equivalent to those given by the various light steps on the printer. By examination of the developed sensitometer strip, the correctly exposed frame is then chosen by inspection and a number on the particular frame indicates the correct printer exposure (Fig. 1).
Publication Date: 1927-09-01
DOI: 10.5594/J13158
ISSN: Print: 0096-6460
Link: https://doi.org/10.5594/J13158
Author(s): C. E. Ives
J. I. Crabtree
Copyright: © 1927 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 “A New Sensitometer for the Determination of Exposures in Positive Printing” by Jones L. A. Crabtree J. I. , Trans. Soc. M. P. Eng. , 15 , 89 , 1922 . EXTERNAL
2 “Improvements in Motion Picture Laboratory Apparatus” by Crabtree J. I. Ives C. E. , Trans. Soc. M. P. Eng. , 18 , 161 , 1924 . EXTERNAL
3 “The Development of Motion Picture Film by the Reel and Tank Systems” by Crabtree J. I. , Trans. Soc. M. P. Eng. , 16 , 103 , 1923 . EXTERNAL

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C. E. Ives and J. I. Crabtree; A Trial and Error Method of Preparing a Motion Picture Sensitometer Tablet, Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 32, September 1927); SMPTE, 1927. Available at https://doi.org/10.5594/J13158

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C. E. Ives and J. I. Crabtree; A Trial and Error Method of Preparing a Motion Picture Sensitometer Tablet, Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 32, September 1927); SMPTE, 1927. Available at https://doi.org/10.5594/J13158

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<span class="citation">C. E. Ives and J. I. Crabtree; <cite>A Trial and Error Method of Preparing a Motion Picture Sensitometer Tablet</cite>, Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 32, September 1927); SMPTE, 1927. Available at <a href="https://doi.org/10.5594/J13158" target="_blank" rel="noopener">https://doi.org/10.5594/J13158</a></span>

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C. E. Ives and J. I. Crabtree; <cite id="bib-10-5594-j13158">A Trial and Error Method of Preparing a Motion Picture Sensitometer Tablet</cite>, Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 32, September 1927); SMPTE, 1927
<span class="doi">10.5594/J13158</span>
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Referenced By

A Semi-Automatic Timing Device for Motion Picture Negatives [Active]