This demonstration shows how an automated assistant encoded with knowledge of cinematography practice can off er suggested viewpoints to a fi lmmaker operating a hand-held motion-tracked virtual camera device. Our system, called Director's Lens, uses an intelligent cinematography engine to compute, at the request of the lmmaker, a set of suitable camera placements for starting a shot that represent semantically and cinematically distinct choices for visualizing the current narrative. Editing decisions and hand-held camera compositions made by the user in turn influence the system's suggestions for ubsequent shots. The result is a novel virtual cinematography workflow that enhances the fi lmmaker's creative potential by enabling e cient exploration of a wide range of computer-suggested cinematographic possibilities.