Sigma MOUNT CONVERTER MC-21 (SA-L)
firmware v1.2
Sigma · Released Apr 23, 2020 · First seen Jul 5, 2026
v1.2 is not the latest firmware for the Sigma MOUNT CONVERTER MC-21 (SA-L): the current version is v1.3 (June 25, 2020). Go to v1.3
What's in this update
The firmware will optimize the communication regarding the current consumption of the Leica SL2.The firmware will improve the phenomenon of overexposure when continuous shooting when it is used in combination with Panasonic Lumix DC-S1R / DC-S1.
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See the full firmware history for the MOUNT CONVERTER MC-21 (SA-L)