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SMPTE Journal ( Volume: 64, Issue: 10, October 1955)
[ACTIVE]

The Evaluation and Control of Direct-Reading Color Densitometers

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
SMPTE J
Volume
64, No. 10, pp. 561–565
Abstract
Color densitometers are used in photographic laboratories for film processing control, printer control, print film evaluation, and negative or intermediate film evaluation. Performance characteristics of interest for a color densitometer include total and operational density range, measuring geometry, linearity, drift, noise, precision and accuracy. The density range must be sufficient to assure satisfactory operation with specified filters. Measuring geometry and linearity are of importance to problems other than process control. Good precision implies freedom from noise and drift. Precision is of particular importance in process or printer control. Accuracy is of importance in making intercomparisons with other instruments and for film evaluation purposes. Satisfactory routine operation of a densitometer is best obtained by means of routine operating checks, maintenance checks, and performance checks. Performance checks may be made using plaques of film or other suitable materials. The plaques may be calibrated to provide precision or accuracy performance checks. Daily checks should be plotted on control charts and may be summarized on long-range trend charts. The controls may also be combined into a single “go no-go” gauge.
Publication Date
1955-10-01
DOI
10.5594/J14010
ISSN
Print: 0898-0438
Link
https://doi.org/10.5594/J14010
Author(s)
W. Lyle BrewerColor Technology Div., Eastman Kodak Co., Rochester 4, N. Y.
Murray C. GoddardColor Technology Div., Eastman Kodak Co., Rochester 4, N. Y.
Stanley A. PowersColor Technology Div., Eastman Kodak Co., Rochester 4, N. Y.
Copyright
© 1955 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • Transmission Densitometer for Color Films [Active]
  • 1. Color Sensitometry Subcommittee Report, “Principles of color sensitometry,” Jour. SMPTE , 54 : 655 – 724 , June 1950 . EXTERNAL
  • 2. Evans R. M. Hanson W. T. Jr. Brewer W. L. , Principles of Color Photography , p. 406 ff. , John Wiley & Sons , New York , 1953 . EXTERNAL
  • 4. Diffuse Transmission Density, American Standard Z38.2.5–1946, American Standard Assn., 70 E. 45 St., New York 17. EXTERNAL
  • 5. Kodak Wratten Filters , 18th Ed. , Eastman Kodak Co. , 1951 . EXTERNAL
  • 6. Williams F. C. , “Objectives and methods of density measurement in sensitometry of color films,” J. Opt. Soc. Am. , 40 : 104 – 112 , 1950 . EXTERNAL
  • 7. Spectral Diffuse Densities of Three-component Subtractive Color Films, American Standard, PH 2.1–1952, American Standard Assn., 70 E. 45 St., New York 17. EXTERNAL
  • 8. Letzer E. K. Powers S. A. , “Interference filters for photographic densitometry,” J. Opt. Soc. Am. , 44 : 870 – 874 , Nov. 1954 . EXTERNAL
  • 9. ASTM Manual on Quality Control of Materials , American Society for Testing Materials , Philadelphia , 1951 . EXTERNAL
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W. Lyle Brewer, Murray C. Goddard, and Stanley A. Powers; The Evaluation and Control of Direct-Reading Color Densitometers, SMPTE Journal ( Volume: 64, Issue: 10, October 1955); SMPTE, 1955. Available at https://doi.org/10.5594/J14010
Snippet:
W. Lyle Brewer, Murray C. Goddard, and Stanley A. Powers; The Evaluation and Control of Direct-Reading Color Densitometers, SMPTE Journal ( Volume: 64, Issue: 10, October 1955); SMPTE, 1955. Available at https://doi.org/10.5594/J14010

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W. Lyle Brewer, Murray C. Goddard, and Stanley A. Powers; The Evaluation and Control of Direct-Reading Color Densitometers, SMPTE Journal ( Volume: 64, Issue: 10, October 1955); SMPTE, 1955. Available at https://doi.org/10.5594/J14010
Snippet:
<span class="citation">W. Lyle Brewer, Murray C. Goddard, and Stanley A. Powers; <cite>The Evaluation and Control of Direct-Reading Color Densitometers</cite>, SMPTE Journal ( Volume: 64, Issue: 10, October 1955); SMPTE, 1955. Available at <a href="https://doi.org/10.5594/J14010" target="_blank" rel="noopener">https://doi.org/10.5594/J14010</a></span>

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W. Lyle Brewer, Murray C. Goddard, and Stanley A. Powers; The Evaluation and Control of Direct-Reading Color Densitometers, SMPTE Journal ( Volume: 64, Issue: 10, October 1955); SMPTE, 1955
doi: 10.5594/J14010
url: https://doi.org/10.5594/J14010
Snippet:
<li>
W. Lyle Brewer, Murray C. Goddard, and Stanley A. Powers; <cite id="bib-10-5594-j14010">The Evaluation and Control of Direct-Reading Color Densitometers</cite>, SMPTE Journal ( Volume: 64, Issue: 10, October 1955); SMPTE, 1955
<span class="doi">10.5594/J14010</span>
</li>

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