a tracking shot or zoom that moves back from the subject to reveal the context of the scene.

a type of wipe in which the succeeding image appears to push the preceding one off the screen.

shifts the area of sharp focus from one plane to another during a shot thereby directing the attention of the viewer forcibly from one subject to another.

In Marxian thought, the relationships in the productive system between producer, distributer, and consumer.

in shooting, the number of frames exposed per second; in projection, the number of frames thrown on the screen per second. If the two are same, the speed of action appears normal while a disparity will create slow or fast motion. The standard rate in sound cinema is 24 frames per second for both shooting and projection (for silent film, it used to be between 16 and 18 frames per second.)