the creative artist responsible for complete artistic control of all phases of a film's production (such as making day-to-day determinations about sound, lighting, action, casting, even editing), for translating/interpreting a script into a film, for guiding the performances of the actors in a particular role and/or scene, and for supervising the cinematography and film crew. The director is usually the single person most responsible for the finished product, although he/she couldn't make a film without support from many other artists and technicians; often the director is called a helmer(at-the-helm); the assistant director is known as the a.d. ; the director of photography (or cinematographer), responsible for the mechanics of camera placement, movements, and lighting, is known as the d.p.