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 #:
000714
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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1950 INTERPRETING RESULTS 709 ties for a hypothetical print are plotted against the logarithms of camera exposure. While it is possible to guess that the highlights will be reddish, the middle densities bluish and the shadows green, it is difficult to go beyond these meager and uncertain statements. Considerable experience is necessary before density numbers can be reliably interpreted as approximate image colors. The practice of ^rrr; ^ — ^ ^ § x ^sN jS X \\ , _S ^ V ^ % X ^ v\ ^> > ^^ ->^« 0 0 -I 1 0 2 0 5 0 8 1 1 1. LOG.nE (meter candle seconds) RED GREEN BLUE Fig. 11. Integral density plot of the over-all characteristic curves of a hypothetical process. Red, green and blue narrow-band filter densities are plotted against the logarithms of exposure. The relative positions of the curves suggest reddish highlights, bluish middle tones and green shadows. estimating color by color density differences is fairly common, and often includes the plotting of such differences on trilinear co-ordinate graphs. The danger of this practice lies in the circumstance that the correlation between image color and density differences is different at different levels of absolute density. A given set of density differences in two images of different absolute density levels does not guarantee