The Three Color Zone notation system is originated in the need that the directors of photography have of working with color together with the illumination. The system offers a tool that uses well known units, such as stops, exposure values (EV), or zones, classifying colors (surfaces or filters) according to the zone in which every layer of the photographic emulsion is exposed. The main idea of the system is to integrate all the aspects that the directors of photography work with. We can also extend the system to color temperature and the color rendering of light sources. The aim of the paper is to show, by means of images, how the system works.
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