Measurement of Photographic Printing Density
When the spectral sensitivity of positive film is simulated by the use of a suitable combination of phototube and optical filter in the integrating sphere densitometer, the printing density of any type of negative, irrespective of grain size, with any type of base or backing, may be accurately determined. Printing density is practically independent of the type of light-source or filtering employed in the printer. Relationships between printing and visual diffuse densities for various types of negatives have been established.
- Print ISSN
- 0097-5834
- Published
- 1941-06
- Content type
- Original Research
- DOI
- 10.5594/J09980
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