Sigma releases MC-11 Firmware Update 1.08.
Update Date 2017.07.20
It corrects the phenomenon that AF does not operate properly when some lenses that are not compatible with the MC-11 are attached.
※ Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.
Download at:
https://www.sigma-global.com/en/download/lenses/firmware/