"SA-mount" redirects here. For another camera mount sometimes also abbreviated as "SA"-mount, see Sony A-mount.
The Sigma SA-mount is a lens mount by the Sigma Corporation of Japan for use on their autofocus single-lens reflex and mirrorless cameras. It was introduced with the SA-300 in 1992. Originally, the SA-mount was a dual-bayonet mount with inner (SA-IB) and outer (SA-OB) bayonets, the latter being a feature intended to mount heavy telephoto lenses,[1] but never utilized by Sigma and consequently dropped with the release of the SD14 in 2007.
There were two precursors to the introduction of SA-mount cameras, the manual-focus Sigma Mark-I in 1976, which still featured a M42 screw lens mount, and the SA-1 of 1983 with Pentax K-mount.
Mechanically, the (inner) SA-mount is similar to the Pentax K-mount as well,[2] but with a flange focal distance of 44.00 mm, identical to that of the Canon EF-mount. Like the EF-mount, the SA-mount uses electrical communication between body and lens, 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.
All Sigma SLRs and DSLRs can use manual focus lenses too, which have no electrical communication between body and lens.
In September 2018, Sigma announced that they will stop the development of SA-mount cameras and focus on the LeicaL-mount, as members of the L-Mount Alliance alongside Panasonic.[3]
M42-mount lenses can be mounted via adapters utilizing the SA inner bayonet.
Despite of the physical similarities Pentax K-mount (PK) lenses can't really be fitted straight onto the SA-mount as well, once the protruding AA lever and AA protector outcrop are removed, though the fit is slightly loose as the SA-mount has a slightly bigger bore than the PK-mount. However, due to the difference in registration distance scale focusing isn't possible and the close focusing capabilities will be reduced.
Utilizing the SA-OB bayonet mount (on camera bodies supporting it), Nikon F-mount can be fitted and used via a JTAT mount adapter developed by Kazuo Suzuki, Tachibana Seisakusho.[4]
In digital cameras, it is important to make sure that the rear of an adapted lens never hits the camera's dust protector filter when focused to infinity.
Lens adaptationsedit
Newer lenses with Sigma SA-mount can be used on newer Sony E-mount cameras (for example, the Sony ILCE-7 series, the ILCE-5000, ILCE-6000 etc.) using the Sigma MC-11 SA-E mount adapter, introduced in 2016. (A similar Sigma MC-11 EF-E adapter is available to mount Canon EF-mount lenses on Sony E-mount cameras.) The adapters support autofocus, image stabilization and electronic aperture control.
^Stephen H. Westin. "Comparison: Sigma SA mount vs. Pentax K".
^"Sigma Set To Axe SA Mount Cameras". ePHOTOzine. Retrieved 2018-09-26.
^. www.jtat.com. Archived from the original on 2005-10-01.
January 01, 1970
sigma, mount, mount, redirects, here, another, camera, mount, sometimes, also, abbreviated, mount, sony, mount, lens, mount, sigma, corporation, japan, their, autofocus, single, lens, reflex, mirrorless, cameras, introduced, with, 1992, originally, mount, dual. SA mount redirects here For another camera mount sometimes also abbreviated as SA mount see Sony A mount The Sigma SA mount is a lens mount by the Sigma Corporation of Japan for use on their autofocus single lens reflex and mirrorless cameras It was introduced with the SA 300 in 1992 Originally the SA mount was a dual bayonet mount with inner SA IB and outer SA OB bayonets the latter being a feature intended to mount heavy telephoto lenses 1 but never utilized by Sigma and consequently dropped with the release of the SD14 in 2007 There were two precursors to the introduction of SA mount cameras the manual focus Sigma Mark I in 1976 which still featured a M42 screw lens mount and the SA 1 of 1983 with Pentax K mount Mechanically the inner SA mount is similar to the Pentax K mount as well 2 but with a flange focal distance of 44 00 mm identical to that of the Canon EF mount Like the EF mount the SA mount uses electrical communication between body and lens 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 All Sigma SLRs and DSLRs can use manual focus lenses too which have no electrical communication between body and lens In September 2018 Sigma announced that they will stop the development of SA mount cameras and focus on the Leica L mount as members of the L Mount Alliance alongside Panasonic 3 Contents 1 Compatibility 2 Lens adaptations 3 Camera bodies 4 Lenses 5 See also 6 ReferencesCompatibility editM42 mount lenses can be mounted via adapters utilizing the SA inner bayonet Despite of the physical similarities Pentax K mount PK lenses can t really be fitted straight onto the SA mount as well once the protruding AA lever and AA protector outcrop are removed though the fit is slightly loose as the SA mount has a slightly bigger bore than the PK mount However due to the difference in registration distance scale focusing isn t possible and the close focusing capabilities will be reduced Utilizing the SA OB bayonet mount on camera bodies supporting it Nikon F mount can be fitted and used via a JTAT mount adapter developed by Kazuo Suzuki Tachibana Seisakusho 4 In digital cameras it is important to make sure that the rear of an adapted lens never hits the camera s dust protector filter when focused to infinity Lens adaptations editNewer lenses with Sigma SA mount can be used on newer Sony E mount cameras for example the Sony ILCE 7 series the ILCE 5000 ILCE 6000 etc using the Sigma MC 11 SA E mount adapter introduced in 2016 A similar Sigma MC 11 EF E adapter is available to mount Canon EF mount lenses on Sony E mount cameras The adapters support autofocus image stabilization and electronic aperture control Camera bodies editBody Release date Mount Sensor Film 24 36 mm SA 300 SA 300 QD 1992 or 1993 SA IB and SA OB N A SA 300N SA 300N QD 1994 SA IB and SA OB N A SA 5 SA 5 QD 1997 SA IB and SA OB N A SA 7 SA 7 QD 2001 SA IB and SA OB N A SA 9 SA 9 QD 2001 SA IB and SA OB N A SA 7N SA 7N QD 2002 SA IB and SA OB N A Digital 13 8 20 7 mm SD9 2002 10 SA IB and SA OB Foveon X3 1512 2268 pixels SD10 2003 12 SA IB and SA OB Foveon X3 1512 2268 pixels SD14 2007 03 SA IB only Foveon X3 1760 2640 pixels SD15 2010 06 SA IB only Foveon X3 1760 2640 pixels Digital 15 7 23 5 mm SD1 2011 05 SA IB only Foveon X3 3200 4800 pixels SD1 Merrill 2012 02 SA IB only Foveon X3 3200 4800 pixels SD Quattro 2016 02 SA IB only Foveon Quattro 3616 5424 pixels Digital 17 9 26 7 mm SD Quattro H 2016 02 SA IB only Foveon Quattro 4128 6192 pixelsLenses editAll SLR lenses manufactured by Sigma since 1993 are available for the SA mount A partial listing can be found here See also editKodak DCS Pro SLR cReferences edit SA 300 owner s manual Stephen H Westin Comparison Sigma SA mount vs Pentax K Sigma Set To Axe SA Mount Cameras ePHOTOzine Retrieved 2018 09 26 SD Nikon gif www jtat com Archived from the original on 2005 10 01 Retrieved from https en wikipedia org w index php title Sigma SA mount amp oldid 1077556523, wikipedia, wiki, book, books, library,
