Led by a gaffer, the electrical department manages the electrical distribution on set, including the physics of lighting and the lighting instruments. The team also controls lighting exposure so any contrast that can be rendered on film in accordance to the “look” desired by the director of photography or the director. Therefore, a gaffer needs to have an in-depth understanding of photographic principles, Ideally a gaffer will collaborate with a DOP to create a specific lighting design and then the electrical department will provide the technical support to bring the DOP’S vision to life.