Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 6, June 1935)

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Some Factors in Photographic Sensitivity

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 24, No. 6, pp. 500–518
Abstract: Discussion is limited to gelatino-silver halide emulsions for development. Sensitivity is broadly defined as the reciprocal of the minimum incident light-energy per unit area giving a definable effect upon development. This definition is illustrated from the characteristic curve. The factors discussed are (a) intrinsic properties of silver halide layer; and (b) extrinsic factors, or exposure conditions. Under (a) are discussed grain size, nucleation, optical sensitizing, inhibition, layer thickness, etc.; under (b), intensity level of illumination, temperature, and humidity. Sensitivity is also envisaged broadly as a differential between progressive and regressive phases of latent-image formation.
Publication Date: 1935-06-01
DOI: 10.5594/J05408
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J05408
Author(s): S. E. Sheppard
Copyright: © 1935 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 Sheppard S. E. : “The Reactions of Photographic Materials to Light,” Ind. Eng. Chem. , 22 (May, 1930 ), No. 5 , p. 555 . EXTERNAL
10 Sheppard S. E. Hudson J. H. : “The Halogen Acceptor Theory of Sensitivity and the Thioanilides,” Phot. J. , LXVII (Jan., 1927 ), p. 359 . EXTERNAL
11 Jones L. A. Webb J. H. : “Reciprocity Law Failure in Photographic Exposure,” J. Soc. Mot. Pict. Eng. , XXIII (Sept., 1934 ), No. 3 , p. 142 . EXTERNAL
12 Webb J. H. : “The Relationship between Reciprocity Law Failure and the Intermittency Effect in Photographic Exposure,” J. Opt. Soc. Amer. , 23 (May, ( 1933 ), No. 5 , p. 157 . EXTERNAL
13 Silberstein L. Webb J. H. : “Photographic Intermittency Effect and the Discrete Structure of Light,” Phil. Mag. , XVIII (July, 1934 ), No. 117 , p. 1 . EXTERNAL
14 Luft F. : “Die Temperaturabhängigkeit des photographischen Prozesses,” Phot. Korr. , 69 (Nov., 1933 ), No. 11 , p. 161 . EXTERNAL
15 Sheppard S. E. Wightman E. P. Quirk R. F. : “Temperature Coefficient of Photographic Sensitivity. I,” J. Phys. Chem. , XXXVIII (June, 1934 ), No. 6 , p. 817 . EXTERNAL
16 Sheppard S. E. Wightman E. P. : “Feuchtigkeit und photographische Empfindlichkeit,” Ber. VIII Internat. Kongr. Phot. ( 1931 ), p. 157 . EXTERNAL
2 Sheppard S. E. : “Photographic Gelatin,” Phot. J. , LXV (Aug., 1925 ), p. 380 . EXTERNAL
3 Carroll B. H. Hubbard D. : “Kinetics of Reaction between Silver Bromide and Photographic Sensitizers,” Bur. Standards J. Research , 12 (March, 1934 ), No. 3 , p. 329 . EXTERNAL
4 Sheppard S. E. : “Relative Masses of Photo-Silver and Sensitivity Specks in the Photographic Latent Image,” Phot. J. , LXXI (Aug., 1931 ), p. 313 . EXTERNAL
5 Reinders W. Hamburger L. : “Zur Silberkeimtheorie des latenten-Bildes. II. Die Grösse und die Art der Keime und Prokeime bei Bromsilberemulsionen,” Z. wiss. Phot. , 31 (Feb., 1933 ), No. 10 , p. 265 . EXTERNAL
6 Hickman K. C. D. : “A Chemical Aspect of Sulfide Sensitivity,” Phot. J. , LXVII (Jan., 1927 ), p. 34 . EXTERNAL
7 Sheppard S. E. Wightman E. P. : “Effect of Environment on Photographic Sensitivity. III. Effect on Certain Salts,” Phot. J. , LXIX (March, 1929 ), p. 134 . EXTERNAL
8 Rawling S. O. : “The Sensitivity of Photographic Emulsions. II. Hydrion Concentration and the Silver Bromide-Thiocarbamide Complexes,” Phot. J. , LXVII (Jan., 1927 ), p. 42 . EXTERNAL
9 Slater-Price T. : “Secondary Reactions in Latent-Image Formation,” Phot. J. , LXXI (Feb., 1931 ), p. 59 . EXTERNAL

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S. E. Sheppard; Some Factors in Photographic Sensitivity, Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 6, June 1935); SMPTE, 1935. Available at https://doi.org/10.5594/J05408

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S. E. Sheppard; Some Factors in Photographic Sensitivity, Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 6, June 1935); SMPTE, 1935. Available at https://doi.org/10.5594/J05408

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<span class="citation">S. E. Sheppard; <cite>Some Factors in Photographic Sensitivity</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 6, June 1935); SMPTE, 1935. Available at <a href="https://doi.org/10.5594/J05408" target="_blank" rel="noopener">https://doi.org/10.5594/J05408</a></span>

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S. E. Sheppard; Some Factors in Photographic Sensitivity, Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 6, June 1935); SMPTE, 1935
doi: 10.5594/J05408
url: https://doi.org/10.5594/J05408

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<li>
S. E. Sheppard; <cite id="bib-10-5594-j05408">Some Factors in Photographic Sensitivity</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 6, June 1935); SMPTE, 1935
<span class="doi">10.5594/J05408</span>
</li>