A B C D E F G H I J K L M N O P Q R S T U V W X Z

"Out" Time: The actual time after which you have changed out of wardrobe and are released.
Objective Camera: The attempt to suggest that the camera acts only as a passive recorder of what happens in front of it. The use of objective camera relies on de-emphasis of technique, involving minimal camera movement and editing.
Obstacle: That which prevents a character from achieving his/her objective. Encountering an obstacle initiates a new action by the character/s concerned.
Off Book: The term used to describe when the actors put down the script in the tenuous but brave belief that they now know their lines well enough to be "off-book."
Off-Camera (OC or OS): Dialogue delivered without being on screen.
On A Bell: A request by the director to the sound man to turn on a bell to alert everyone that filming is about to begin and "silence is golden". Usually signified by a flashing red light. Do not open any doors!
On Book: When either the stage manager or an assistant is following the script in order to help actors when they stumble over lines.
OP: Opposite prompt: the right hand side of the stage as you face the audience.
Open Call: An interview situation open to anyone qualifying with the physical attributes of a character or part.
Open White: A lantern is said to be "in open white" if no filter or gel is used to colour its light.
Optical Printer: A device used to "print" the images of one film onto another film through direct photography.
Out Clause: Section of a contract allowing the performer to terminate agreement under certain circumstances.
Out-Take: A take that is not included in the final version of a film.
Overdubbing: In studio singing or voice work, the process of laying a new soundtrack over an old one.