Journal of the Society of Motion Picture and Television Engineers (1950-1954)

Record Details:

Title:
Journal of the Society of Motion Picture and Television Engineers
Date:
1950-1954
Publisher:
Easton, Pa. : The Society
Volume:
Journal of the Society of Motion Picture and Television Engineers
Leaf #:
000449
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Date Added:
July 19, 2022
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444 O. E. MILLER for the normal variations in the quality of daylight. Since it is the relative exposure of the red, green and blue records in the film that determines the color balance of a picture, a meter is needed which is capable of measuring the amounts of energy in the red, green and blue regions of the spectrum. Ideally, such a meter would have three sensitive elements with spectral sensitivities like those of the three emulsion layers of the color film. The three readings could then be interpreted in terms of the exact filter corrections needed .to give a balanced exposure. For such a meter to be useful a minimum of computation should be required to translate the meter readings into filter corrections. REFERENCES (1) S. M. Newhall and Josephine G. Brennan, "Comparative list of color terms," ISCC Report, p. 17; January, 1949. (2) American standard illuminating engineering nomenclature and photometric standards (Z7. 1-1 942), American Standards Assn., New York. (3) L. A. Jones and H. R. Condit, "Photographic exposure, II," /. Opt. Soc. Amer., vol. 39, pp. 112-123; February, 1949. (4) P. Moon, The Scientific Basis of Illuminating Engineering, pp. 130-132; McGraw-Hill, New York, 1936. (5) R. M. Evans, An Introduction to Color, pp. 212-214; John Wiley, New York, 1948.