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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 42, Iss. 6 — Jun. 1, 1952
  • pp: 402–403

A Photographic Low Intensity Desensitization Effect

R. E. MAURER and J. A. C. YULE  »View Author Affiliations

JOSA, Vol. 42, Issue 6, pp. 402-403 (1952)

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A new photographic phenomenon, a low intensity desensitization effect (“L.I.D. effect”) is described. With certain solarizable emulsions, it was found that the latent image formed by a short, high intensity exposure was destroyed by a subsequent long, low intensity exposure. If the low intensity exposure was given first, it desensitized the emulsion. Thus, in both cases the density resulting from the two exposures was lower than the density obtained by the short exposure alone. Sensitometric data on this desensitization effect are presented. Previous work relating to it is briefly reviewed, and its relation to other double-exposure effects is outlined. Substitution of x-ray exposures for the high intensity exposures show that both act in the same manner under the experimental conditions used. Practical applications of the new effect as a reversal process and for color correction in reproducing colored originals are suggested.

R. E. MAURER and J. A. C. YULE, "A Photographic Low Intensity Desensitization Effect," J. Opt. Soc. Am. 42, 402-403 (1952)

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  1. J. H. Webb and C. H. Evans, J. Opt. Soc. Am. 30, 445 (1940).
  2. H. Sauvenier, Bull. Soc. Roy. Sci. Liège 15, 418 (1946).
  3. S. E. Sheppard, Chem. Revs. 4, 319 (1927).
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