1. A photosensitive element for producing a false color image from a monochromatic source image and the like; comprising four light sensitive silver halide emulsion layers having a composition to produce differing tonal gradations; two emulsion layers containing color couplers and the other two emulsion layers free of color couplers; said photosensitive element having a supoort for supporting the four emulsion layers; said photosensitive element also comprising integral means for the differential reexposure of two emulsion layers; one of said four emulsion layers producing a negative dye image in a first color, another of said four emulsion layers producing a positive dye image in a second color, the remaining two emulsion layers producing a positive dye image and a negative dye image both in the same third color; the four dye images forming three substantially opposite tonal gradations in cyan, magenta and yellow colors.