Zoom
On-Set Term; When the DP moves in on an object from a wider shot to a closer shot or zooms out to include more of the setting using the lens. Allows cinematographer to take a variety of different kinds of camera shots including (but not limited to) Long, Medium, Close-up and Extreme Close-up. Physically moving the camera closer and farther away from the object being filmed could create the same effect but will alter the perspective.

Depth of Field
On-Set Term; The range of distance in subject space within which a lens provides an image that reproduces detail with an acceptably small circle of confusion usually small enough for subjective evaluation as a point. Larger f-numbers give greater depth of field. (The more the iris is stopped down the greater the 'depth of field'). Shorter focal lengths give greater 'depth of field'. Greater subject distances gives greater 'depth of field'. Depth of field is greater behind the subject than the front.

Medium shot
On-Set Term; (MS) A shot in which a human figure (or other subject) is shot at a medium distance, usally from the waist up.

Blocking
(Blocking Rehearsal) On-Set Term; A walk-through of the actors' movements, relative to the camera, for a given scene. This ensures that the camera will capture all the good stuff when film is actually rolling, such as people being blown out of doors by large fireballs.

ADR
Production Term; Automatic Dialog Replacement. Also known as looping. This is a process of re-recording dialog in the studio in synchronization with the picture. It is not uncommon to notice actors' mouths moving completely out of synch with the words — bad ADR. ADR can take place off screen to make creative changes. For example, cutting to a reaction shot and adding a line by the off screen character to fix a story problem.

Head Shot
Industry Term; Black and white 8x10 photographs of an actor or actresses, most often just of their head, with an acting resume attached to the back. Agents send headshots out to casting agents, and actors and actresses bring them to auditions. This is the equivalent of a resume for actors.

Pick-up Shot
On-Set Term; Re-shooting a portion of a scene, the rest of which was acceptably filmed in a previous take. Not to be confused with a pick-up line.

Production
Industry Term; Usually refers to principal photography, but can cover the period in time from when a script gets a Greenlight through shooting.

Editor
Player; The film or video cutter. This person, along with the director, determines the narrative structure of a film. The Editor splices the shots of a film together into final form. Editors must figure out which scenes to include and omit in order to convey the passage of time and clean up any mistakes that occurred during the filming process. Final Cut The film in its final state, as opposed to rough cut.

Two Shot
On-Set Term; A shot of two people, usually from the waist up.