Abstract
The effect of hexachloroirridate on the exposure intensity dependence of the distribution and the developing property of the latent image was examined. Hexachloroirridate added at the precipitation of silver halide eliminates the high intensity reciprocity law failure of the emulsion as described in the previous paper. Generally, the developing rate of the emulsion is decreased with the increase of light intensity of the exposure, this phenomena has be known as Cabannes-Hoffman effect. And the ratio of the surface sensitivity to internal sentitivity of the silvev halide grain is decreased with the increase of the exposure intensity. In the emulsion prepared in the presence of the small amount of hexachloroirridate Cabannes-Hoffman effect and the influence of the exposure intensity on the latent image distribution are eliminated completely.
