Through publications, teaching, and public lectures, extended the study of the moving image as a creative academic discipline, one that includes its history from its beginnings to the present and its aesthetics across cultures from America and Europe to Russia and Japan. Research focuses on multiple dimensions of film's existence, from the variety of its mechanisms to the relation of its experiences to those of religion. Author of D. W. Griffith and the Origins of American Narrative Film (1991) and The Films of Fritz Lang: Allegories of Vision and Modernity (2000). Work on genre cinema, history of technology issues of the avant-garde and film exhiibition.
Working currently on the hsitry and theory of the moving image both before and after cinema, understanding it both in terms of its technology and the phenomenology of its perception.
working as well in the relation between cinema and other media, including panoramas
comic strips, theater, the magic lantern, the camera obscura