Arri

The Arri Group is a motion picture and television equipment company, founded in 1917 by August Arnold and Robert Richter, based in Munich, Germany. It is currently the largest worldwide supplier of film equipment. Arri basically specializes in portable, light-weight cameras, which made their products popular among filmmakers since the 1960s. Since the lightweight Arriflex cameras weren't soundproof, they were mostly used as "" cameras in Hollywood, used only for scenes which didn't require sound recording, while they were popular with European filmmakers as standard shooting equipment (since most European productions were dubbed in post-production, instead of using dialog recorded on the shooting).

Arri cameras and lenses were used during the production of Star Trek: The Original Series, as an addition to the standard Mitchell cameras used for filming the series. Besides using it for scenes which didn't require sound recording (see above), usually Arri equipment was used in scenes which required more flexible, hand-held camerawork (for which the robust Mitchell camera wasn't suited for), such as fight scenes, or special optical effects (like the use of the 9mm fisheye lens in ).