Lateral camera movement parallel to subject axis — distinct from pan. Dolly moves sideways while maintaining focus on the target.
The camera moves sideways past your subject—that's trucking. The difference from a pure pan movement lies in the fact that the optical axis of the camera follows the object. You move the entire camera system laterally while maintaining its orientation. This requires precision: the camera must move exactly parallel to the subject's axis, otherwise it looks like a combination of a dolly and a pan, which quickly appears amateurish.
On set, you work with a dolly for this—either on tracks that run parallel to your action, or with a free-wheeling cart on a flat surface. The critical factor: your distance to the subject remains constant. This distinguishes trucking from a push-in or pull-out, where the depth changes. With trucking, something else happens—you reveal new image information from the side, while your focus subject remains equally prominent. A typical application scenario: a person is standing or walking, and you move around them without ever taking them out of focus. The background shifts, the subject virtually floats stably within the frame.
Practical Pitfalls: First—the speed. Trucking immediately appears slow or hesitant if you move too fast. Second—the stability. Tracks are your friend here; without them, you need a damn skilled grip. Third—the choice of subject. Trucking works brilliantly for portraits or figure constellations, but seems superfluous and intrusive for wide landscapes or chaotic scenes. You create a formal, often elegant or frightening distance with it—depending on the music, editing, and emotional context of the scene.
In contrast to a jib or Steadicam, with trucking you allow yourself extreme stillness and mathematical precision. This makes it a favorite movement for psychologically dense moments—when the viewer is meant to feel that the world is revolving around a character, not the other way around. Work with your colorist here: with trucking, any irregularity in the focus plane becomes visible. Stepless follow-focus is not a luxury here, but a necessity.