camera movements

Zoom: It involves changing the focal length of the lens to make the subject appear closer or further away in the frame. 

How its used: to make the subject appear closer or further away in the frame; effectively magnifying a part of the images, shows the context of the setting or where the subject is located.

Pan: Moving the camera lens to one side or another.(to follow a subject or scan a scene)

How its used: This is a swiveling movement, i.e. mounted in a fixed location on a tripod or shoulder, rather than a dolly-like movement in which the entire mounting system moves.

Tilt: the camera is aimed sideways along a straight line. Note that the camera itself is not moving. It is often fixed on tripod, with the operator turning it either up or down

How its used: if you mount a camera on your shoulder and nod it up and down, you are tilting the camera. Used to show how big things are (height) looking up shows power looking down shows lack of power

Tracking: Tracking is often more narrowly defined as movement parallel to the action, or at least at a constant distance

How its used: Move the camera physically to the left while maintaining its perpendicular relationship. Natural movement, can look through rooms to follow subjects

Dolly: Motion towards or motion from. (The phrase dolly-in means step towards the subject with the camera, while dolly-out means to step backwards with the camera, keeping the zoom the same.)

How its used: The camera is mounted on the dolly and records the shot as it moves. More natural movement than zoom, reveals info in the shot