Comparison of Graininess and Speeds of Different Types of Photographic Films
- 1 August 1941
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 31 (8) , 513-520
- https://doi.org/10.1364/josa.31.000513
Abstract
In this investigation the graininess and speed of the more popular commercial films developed in typical fine-grain developers were determined quantitatively. It was found that the differences in graininess produced by the developers were small in comparison with the inherent differences among the various films. Certain fine-grain developers were effective in reducing the graininess of fast, coarse-grain emulsions, but only at the sacrifice of effective emulsion speed. These developers, however, were only slightly effective in reducing the graininess of slow, fine-grain emulsions, small differences in density or contrast completely obscuring the effects of the developers.Keywords
This publication has 11 references indexed in Scilit:
- Study of various sensitometric criteria of negative film speedsJournal of the Optical Society of America, 1940
- Methods and Instruments for the Determination of Photographic Speeds by Measurement of Relative Characteristic Gradients*Journal of the Optical Society of America, 1939
- The evaluation of negative film speeds in terms of print qualityJournal of the Franklin Institute, 1939
- Fine Grain Photographic DevelopmentJournal of Applied Physics, 1939
- Graininess of Photographic Materials in Objective Absolute MeasureJournal of the Optical Society of America, 1937
- Objective Measurements of Graininess of Photographic MaterialsJournal of the Optical Society of America, 1936
- An Instrument for the Measurement of the Graininess of Photographic Materials *†Journal of the Optical Society of America, 1936
- Minimum Useful Gradient as a Criterion of Photographic Speed*Journal of the Optical Society of America, 1935
- The measurement of graininess in photographic depositsJournal of the Franklin Institute, 1920
- The physical characteristics of the elementary grains of a photographic plateJournal of the Franklin Institute, 1917