A shot in which the camera moves toward or away from its subject while filming. Traditionally dolly shots are filmed from a camera dolly but the same motion may also be performed with a Steadicam , gimbal, etc. A dolly shot is generally described in terms of dollying in or dollying out. Trucking in and out is also a common synonym.wikipediacine
Dolly shots move toward or away from the subject or set (lens 0 degrees to travel); trucking shots are more or less parallel to the subject s line of movement (lens 90 degrees to travel).