Acting area The area within a setting where action takes place.
Action Any performance in front of the camera.
Action line (imaginary line) If shots from either side of an imaginary line connecting two subjects are intercut, the direction of the action and performers’ positions are laterally reversed (mirrored). See Reverse cut.
AGC Circuits self-adjusting the video and/or audio to a preset level (strengthening weak signals; holding back strong ones.)
Amp (I) Ampere. Measurement of the strength of a current flowing through a circuit. (Also sub-units – milliamps (mA), microamps (mA)).
Angle of view The coverage of a lens; its horizontal and vertical angles.
Asymmetrical balance A pictorial arrangement in which a larger object close to ...