Sigma Updates 24-70 ART Firmware and Dock
Sigma has updated the firmware for the Canon version of the 24-70 f/2.8 OIS ART, as well as the calibration dock. Apparently the OS system was not working correctly when these two products were paired together.
Details from Sigma:
We would like to announce that a firmware update for the SIGMA 24-70mm F2.8 DG OS HSM | Art for SIGMA and CANON, as well as a firmware update for the SIGMA MOUNT CONVERTER MC-11 SA-E and EF-E is now available.
This firmware update corrects the phenomenon that the OS mechanism does not operate properly when attached to the SIGMA MOUNT CONVERTER MC-11 SA-E / EF-E.
For customers who own the SIGMA USB DOCK, please update the firmware via SIGMA Optimization Pro. For those who own the SIGMA MOUNT CONVERTER MC-11 SA-E / EF-E, please update the firmware via SIGMA Optimization Pro by connecting it to a computer using the supplied USB Cable.
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 from the following download page.
Hat tip to Canon Rumors for this one.