Quantitative Relationships Between Light Absorption and Spectral Sensitivity of Dye-Sensitized Photographic Emulsions

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Abstract
Quantitative measurements of light absorption and photographic sensitivity for orthochromatic and panchromatic films over the wave‐length region λ4000–7000 have been made. The results show excellent correspondence between light absorption of the dyed silver bromide emulsion and its sensitivity over the entire wave‐length region for the panchromatic film. For equal absorption, the orthochromatic film is less sensitive in the green than in the blue. It is concluded for the panchromatic sensitizing, that transfer of energy from the dye to the silver halide is very efficient. Possible mechanisms of the sensitizing process are discussed.

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