Arri PL is a lens mount developed by Arri for use with both 16 mm and 35 mm movie cameras. A lens mount is an interface — mechanical and often also electrical — between a photographic Camera body and a lens The Arri Group has been the largest world wide supplier of high quality Motion picture film equipment since 1917 35 mm film is the basic Film gauge most commonly used for both still Photography and Motion pictures, and remains relatively unchanged since its This article is about motion picture film cameras See Video camera for cameras which record images electronically The PL stands for "positive lock". It is the successor mount to the Arri bayonet; however, unlike the bayonet mount, it is incompatible with older Arri-mount lenses, due to the larger diameter. Arri bayonet is a Lens mount developed by Arri for use with both 16 mm and 35 mm Movie cameras Lenses are distinguished by "outer (This can be rectified with an adapter relatively easily, as the flange focal distance is identical. The flange focal distance (FFD (also known as the flange-to-film distance, flange focal depth, flange back distance (FBD or register, depending ) The mount contains four pronged flanges which each contain a notch towards the center. Any of these four notches can be used to align the mount to a locating pin located approximately 45 degrees clockwise from the top of the camera's lens mount. This means that the lens can be oriented in any of four different configurations, which may be decided by factors such as focus puller position, camera position, and preference to working with meters or feet (if a lens has different line indicators on each side). In Cinematography, a focus puller or first assistant camera (1st AC is the member of a Film crew responsible for keeping the Camera 's focus The mount is locked into place using a friction locking ring which, in conjunction with the four prongs of the flange, creates a very strong lens seating. This has become a crucial factor in recent years, as bigger lenses with zoom capabilities, longer focal lengths, or larger lens elements have raised the bar on requirements for mount stability. Furthermore, the tendency is for flange focal distance to become a more critical factor as sharper lenses, film stock with higher resolving power, and post-production workflows which preserve more of the original camera negative's information continue to make technological progress and advancement. The flange focal distance (FFD (also known as the flange-to-film distance, flange focal depth, flange back distance (FBD or register, depending This focuses on Motion picture film For Still photography film see Photographic film. Flange focal distance is also more likely to be rigorously checked as tastes for wider angle lenses continue to push the envelope, as wider lenses have a much narrower tolerance for lens displacement. Because of all of these reasons, the Arri PL mount has become a massive success since it was first released around 1980, and has been adopted by virtually all professional movie camera manufacturers since that time, with the notable exception of Panavision, whose PV mount remains the only other lens mount still in major usage by a large number of professional productions. Panavision is a Motion picture equipment company specializing in Cameras and lenses, based in Woodland Hills California. A PV mount is a Lens mount developed by Panavision for use with both 16 mm and 35 mm Movie cameras It is the only mount offered with
Technical specifications
- Flange focal distance: 52. 00 mm (51. 97 mm for the Arri SR high speed models)
- Diameter: 54. 00 mm
- Cameras:
- 35 mm Arri 3 (later models), Arri 35BL3 (later models), Arri 35BL4, Arri 35BL4S, Arri 535, Arri 535B, Arri 435, Arri 435ES, Arri 435A, Arri 435X, Arricam ST, Arricam LT, Cinema Products FX35, Moviecam SuperAmerica, Moviecam Compact, Moviecam SL, Aaton 35
- 16 mm Arri SR2 (later models), Arri SR3, Arri SR3A, Aaton XTRplus (standard), Aaton XTRprod (standard)
- Video Arri D-20, Arri D-21, Dalsa Origin, Dalsa Origin II, Red One
| Preceded by Arri bayonet |
Arri lens mounts | Succeeded by - |
Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic