New Photographic Method for Making Superior Halftones

A new single negative technique for making superior halftones has been invented, utilizing a main exposure and a flash exposure. Before making the flash exposure, a reflector card is placed on the copyboard holding the original continuous tone copy; the reflector card has a gray scale value of between about 45 percent and about 80% of the shadow density of the original copy and controls the flash exposure, so that dots formed during the main exposure in the highlight and middle tone areas of the original copy are not affected, but dot formation in the shadow areas is enhanced. The result is a haze free reproduction with sharp definition and contrast.