Note on the Measurement of Photographic Densities with a Barrier Type of Photocell

In discussing the use of a photocell for the measurement of diffuse density, the importance of the optical characteristics of the cell as a part of the optical system of the densitometer is emphasized. Data showing some of the discrepancies in density measurement resulting from these optical characteristics are given. It is shown that for two extreme types of emulsion, the measurement of diffuse density is possible with certain arrangements of the optical system.

Print ISSN

0097-5834

Published

1936-02

Content type

Original Research

DOI

10.5594/J08720