Also Known As: Dolly Shot, Dolly Up, Dolly In, Dolly Back, Pull back. A dolly is a small truck which rolls along dolly tracks carrying the camera,some of the camera crew and occasionally the director. "Dolly" is also the action of moving the camera towards (dolly up/in) or away from (dolly/pull back) the object that it is pointing at. The term often appears in screenplays. There is a subtle difference between the results of a zoom shot and a dolly shot. In a zoom, the relative positions and sizes of all objects in the frame remains the same, whereas in a dolly shot this will change as the camera moves. Alfred Hitchcock's much-imitated shot in Vertigo used a combination zoom-in and dolly back, resulting in a dramatic change in perspective.