Follow Action
Description: Camera follows subject as they move. May involve panning, tilting, and zooming.
Purposes: Keep subject in frame, add energy and movement to scene.

Let in/out
Description: Camera is stationary and subject enters or leaves frame.
Purposes: Allow subject to enter or leave scene, a transition between scenes or subjects. Let in can establish a setting and then bring attention to subject walking into setting. Let out can be used to end a scene.

Let in & Follow
Description: Subject enters camera frame and then camera follows moving subject.
Purposes: Establish a scene and then follow action, change attention from one subject to another, pickup pace of scene, transition between subjects.

Shift Attention
Description: Uses a pan, tilt or combination to change the main subject of a shot from one element to another.
Purposes: Shift attention from one element in the frame to another, show physical relationship between subject elements, follow action by changing framing when main action changes between subject elements or show secondary activities happening while main action occurs.