This yellow dye image is exposed on the negative by the blue light from the backing areas, but the yellow light from the foreground passes through it and records an image of the foreground at the same time.The Dunning Process, often in shorthand referred to as "process," was used in many black and white films, most notably King Kong. Its chief limitation was that it could not be used for color cinematography, and the process died out with the increasing move toward production of films in color.
This yellow dye image is exposed on the negative by blue light from the backing areas, but the yellow light from the foreground passes through it and records an image of the foreground at the same time. The Dunning Process, commonly referred to as "process," was used in many black and white films, most notably King Kong. Its primary limitation was that it couldn't be used for color cinematography, and the process eventually died out with the rise of color film production.