In this paper results of measurement on dichroism, birefringence and transmrt-tance of silver-chloride emulsions are given. A method of turning the areas of equal grey levels of the multi-grey level black and white images to equal diohroism is provided. The theory, specialities and practical application of equal-density pseudocolor are presented. The anisotropic plate placed between crossed polarizers is illuminated by a parallel beam of white light, equal-density pseudocolor can be observed. Slightly turning the analyzer pseudocolor may be changed. Therefore a complex black and white photographic image transparency can be changed to an observable pseudocolor pattern. The method only needs a high resolusion photographic plate and is characterized by considerable simplicity, stability and flexibility.