Abstract

A table has been prepared to describe log exposure times a constant directly from transmittance values. This expression of exposure may be used to prepare working curves or corrected to relative log exposure by first determining the γ of the photographic emulsion. A method for determining γ from the table is also described.

Emulsion Calibration Scale for Quantitative Spectroscopic Analysis

Harold K. Hughes and R. W. Murphy
J. Opt. Soc. Am. 39(6) 501-504 (1949)

The Effect of Light-Absorption on the Shape of the Photographic H. and D. Curve*

J. H. Webb
J. Opt. Soc. Am. 38(1) 27-34 (1948)

Criteria for Pre-Exposure of Spectroscopic Plates

Lewis M. Branscomb
J. Opt. Soc. Am. 41(4) 255-260 (1951)

Photographic Sequence Exposure Experiment*

J. H. Enns and E. Katz
J. Opt. Soc. Am. 47(8) 758-764 (1957)

Graphical Analysis of Photographic Exposure and a New Theoretical Formulation of the H and D Curve*

J. H. Webb
J. Opt. Soc. Am. 29(8) 314-326 (1939)