O

oblique angle or tilt shot: a shot taken from a tilted camera which, when projected on the screen, looks as if it is titled on a diagonal
oeuvre: from the French for work
omniscient point of view: the all-knowing narrator
open forms: a frame in which part of the action is cut off or masked
optical printer: a mechanical device used to create special effects in film such as fades, dissolves, multiple exposures, etc.
outtakes: shots that are not included in the final cut of a film
overcranking: the speeding up of a camera's recording speed so that when the captured pictures are played at the normal speed the action appears to be in slow motion. Initially, movie cameras were hand powered by the operator's turning a crank. Overcranking, therefore, refers to the operator turning the crank too quickly. See also undercranking, and frames per second.
overexposure: too much light enters the camera