Analog image processing in modern color photography

In the context of this article, analog image processing comprises methods t o chemically control and improve image quality in color negative films duri ng photographic processing. The chemical control applies to the generation of image dyes and to the optical interaction of partial dye images. The ima ge dyes are generated in two consecutive steps: silver reaction and couplin g reaction. Yield- and distribution-parameters of these reaction steps are relevant for image-quality aspects. In this review the various chemical met hods to achieve image processing (e.g. inhibition, (dye-) amplification, dy e spread) are discussed.