Arri bayonet
Encyclopedia
Arri bayonet is a lens mount
developed by Arri
for use with both 16 mm and 35 mm movie camera
lenses. Lenses of this type are distinguished by "outer wings" which both control aperture
and bayonet alignment, and are placed in the mount while two pressure tabs are simultaneously depressed at the side of the lens mount on the camera. These tabs provide a relatively strong locking mechanism which allows for higher quality lens seating than offered by the Arri standard
mount. Debuting in 1965 with the 16BL, the Arri bayonet mount superseded the Arri standard mount, but cameras with the bayonet mount were also able to accommodate Arri standard lenses due to both mounts having the same flange focal distance
and diameter. However, cameras with Arri standard mounts were unable to fit lenses with Arri bayonet mounts, due to the locking mechanism. The bayonet mount began to be superseded around 1980 by the Arri PL
mount, which has since become an overwhelmingly predominant mount for most modern cameras, along with Panavision
and their PV mount
.
Lens mount
A lens mount is an interface — mechanical and often also electrical — between a photographic camera body and a lens. It is confined to cameras where the body allows interchangeable lenses, most usually the single lens reflex type or any movie camera of 16 mm or higher gauge...
developed by Arri
Arri
-History:Arri was founded in Munich, Germany as Arnold & Richter Cine Technik in 1917, named after founders August Arnold and Robert Richter. They produce professional motion picture equipment, digital and film cameras and cinematic lighting equipment...
for use with both 16 mm and 35 mm movie camera
Movie camera
The movie camera is a type of photographic camera which takes a rapid sequence of photographs on strips of film which was very popular for private use in the last century until its successor, the video camera, replaced it...
lenses. Lenses of this type are distinguished by "outer wings" which both control aperture
Aperture
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane. The aperture determines how collimated the admitted rays are,...
and bayonet alignment, and are placed in the mount while two pressure tabs are simultaneously depressed at the side of the lens mount on the camera. These tabs provide a relatively strong locking mechanism which allows for higher quality lens seating than offered by the Arri standard
Arri standard
Arri standard is a lens mount developed by Arri for use with both 16 mm and 35 mm movie cameras. Lenses are distinguished by a tab inside an outer ring. Because of the weak seating strength and ability of the aluminum mount to gradually become poorly seated, the stainless steel Arri bayonet mount...
mount. Debuting in 1965 with the 16BL, the Arri bayonet mount superseded the Arri standard mount, but cameras with the bayonet mount were also able to accommodate Arri standard lenses due to both mounts having the same flange focal distance
Flange focal distance
For an interchangeable lens camera, the flange focal distance of a lens mount system is the distance from the mounting flange to the...
and diameter. However, cameras with Arri standard mounts were unable to fit lenses with Arri bayonet mounts, due to the locking mechanism. The bayonet mount began to be superseded around 1980 by the Arri PL
Arri PL
Arri PL is a lens mount developed by Arri for use with both 16 mm and 35 mm movie cameras. 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...
mount, which has since become an overwhelmingly predominant mount for most modern cameras, along with Panavision
Panavision
Panavision is an American motion picture equipment company specializing in cameras and lenses, based in Woodland Hills, California. Formed by Robert Gottschalk as a small partnership to create anamorphic projection lenses during the widescreen boom in the 1950s, Panavision expanded its product...
and their PV mount
PV mount
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 Panavision cameras and Panavision-designed lenses, and since the company only rents its equipment, this is likely to remain an exclusive arrangement for the time being...
.
Technical specifications
- Flange focal distance: 52.00 mm
- Diameter: 41.00 mm
- Cameras: (all are Arri models)
- 35 mm Arriflex 35IIC (later models), Arriflex 35BL1, Arriflex 35BL2, 35BL3 (early models), and Arriflex 35III (early models);
- 16 mm SB (only one turret), ST/B (only one turret), M/B, 16BL, Arriflex 16SRArriflex 16SRArriflex 16SR is a movie camera product line created by Arri, introduced in 1975. This 16SR camera series is designed for 16 mm filmmaking in Standard 16 format...
, and Arriflex 16SR2Arriflex 16SRArriflex 16SR is a movie camera product line created by Arri, introduced in 1975. This 16SR camera series is designed for 16 mm filmmaking in Standard 16 format...
(early models).