Steinmann made his debut as both writer and director with the hardcore porno picture High Rise (1973), on which he used the alias Danny Stone.
Dissatisfied with the finished version of the film, Steinmann attributed his directorial credit to the pseudonym Peter Foleg.
He was announced as the director for a proposed sequel to the notorious The Last House on the Left (1972) but this project never came to be.
He was an excellent athlete and post high school graduation distinguished himself in soccer at Clark University in Worcester, Massachusetts (1958-1960).
He started his filming career as writer and director of the hardcore porn High Rise.