Cinematography involves capturing photographic images through controllable elements like film stock, camera lens, framing, and movement. It is defined by the relationship between the camera lens and light source, as well as the focal length and camera position. Different techniques are used to manipulate focus, including deep focus to keep the entire frame in focus versus shallow focus where only one plane is sharp. Filmmakers can also change focus between foreground and background subjects or zoom in/out during a shot. Framing involves camera angles, heights, and tilts that can show relationships and emphasize subjects, while point-of-view shots see through a character's perspective. Movement is achieved through pans that follow horizontally and tracking shots that smoothly follow action.