stand-in

A stand-in, sometimes a lighting double, for film and television is a person who substitutes for the actor before filming, for technical purposes such as lighting and camera setup. Stand-ins are helpful in the initial processes of film and television production. Stand-ins allow the director of photography to light the set and the camera department to light and focus scenes while the actors are absent. The director will often ask stand-ins to deliver the scene dialogue ("lines") and walk through ("blocking") the scenes to be filmed. Stand-ins are distinguished from doubles, who replace actors on camera from behind, in makeup, or during dangerous stunts. Stand-ins do not appear on camera. However, on some productions the jobs of stand-in and double may be done by the same person. In rare cas...