Camera movements like panning, tilting, tracking, and zooming are used in filmmaking to convey meaning. Panning involves horizontal camera movement, tilting involves vertical movement, tracking follows moving subjects forward or backward using a dolly or hand-held camera, and zooming creates the illusion of movement by enlarging or reducing the scene through lens adjustments rather than physical camera movement. These techniques are used to survey scenes, follow action, or alter mood by changing visual focus.