Adobe Systems Inc is diversifying with the introduction of Adobe Photoshop for Apple Computer Inc Macintosh computers: the Mountain View, California company describes the product as a high-end image enhancement tool aimed at artists and desktop publishers; the thing has been bundled with the Barneyscan scanner since October 1988 and was acquired by Adobe in April 1989; it provides a full set of tools for editing and enhancing images and enables users to create images from scratch as well as to manipulate existing ones, and originals can be scanned photographs, slides or electronic artwork; users can print separations straight from the program or save images as Encapsulated PostScript documents; shipping from first quarter 1990, it costs $900.