The paintings generally consist of reflective, clean, and inanimate city and geometric landscapes. He is regarded as one of the founders of the international photo-realist movement of the late 1960s, with such painters as John Baeder, Ralph Goings, Chuck Close, and Duane Hanson. Author Graham Thompson wrote, "One demonstration of the way photography became assimilated into the art world is the success of photorealist painting in the late 1960s and early 1970s. It is also called super-realism or hyper-realism and painters like Richard Estes, Denis Peterson, Audrey Flack, and Chuck Close often worked from photographic stills to create paintings that appeared to be photographs."