Sigma SA mount
Sigma introduced the SA mount in 1992, as evolution of the old (1976) M42 and newer (1983) Pentax K mount. It has been used by full frame and APS size sensor cameras/lenses.
In 2018 Sigma announced that it discontinues development of SA-mount camera focusing instead on the Leica L mount through the L-alliance with Panasonic and Leica, while SA-mount lenses should be still produced.
|Sensor format||Sensor crop||AF support||Year|
|Full frame||1.00||motor in lens||1992|
|APS-C||1.53||motor in lens||2002|