The Sigma SA mount is a design of lens mount designed by the Sigma Corporation of Japan for use on their single-lens reflex camera designs. The SA mount uses a bayonet mount which is physically similar to the Pentax K mount[1] but uses a flange focal distance of 44 mm, identical to that of the Canon EF lens mount. The mount uses only electrical communication between body and lens, like the EF mount, and in fact uses the same signalling lines and protocol as the EF mount, despite the physical incompatibility. Sigma has long produced EF-mount lenses for Canon cameras, and thus had the ability to use this protocol.
Camera Bodies
| Body | Release Date | Sensor |
|---|---|---|
| Film (36 x 24 mm) | ||
| SA-300 | 1992 | n/a |
| SA-300 N | 1994 | n/a |
| SA-5 | 1997 | n/a |
| SA-7 | 2001 | n/a |
| SA-9 | 2001 | n/a |
| Digital (20.7 x 13.8 mm) | ||
| SD9 | Oct. 2002 | Foveon X3, 2268 x 1512 pixels |
| SD10 | Dec. 2003 | Foveon X3 with microlenses, 2268 x 1512 pixels |
| SD14 | Mar. 2007 | Foveon X3, 2640 x 1760 pixels |
| SD15 | Not yet available | Foveon X3 |
Lenses
Most of the lenses manufactured by Sigma are available for the SA mount. A partial listing can be found here.
References
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