Cinematographer Shelly Johnson, in collaboration with director Lurie and the design team, also used lighting and camerawork to signify the shifting of powers. For example, the yard is at first naturally lit and more influenced by daylight, in contrast to Winter's office, which is artificially illuminated by lamps. As the film progresses, the office is more fully infiltrated by exterior light through a broken window. The shift of power is also emphasized through camera techniques. Hand-held cameras were used when filming in the yard to make the audience feel as if they were "participants in the action". However, a very precise, sterile camera composition was used in the warden's office. The prisoners' world gets more precise during the film, while the colonel's world is filmed more loosely.