Sigma has released firmware updates for both its 24-70mm F2.8 DG OS HSM | Art lens and its Mount Converter MC-11 SA-E and EF-E. Both updates address an issue in which the optical stabilization mechanism malfunctions when the lens is used with either of the aforementioned MC-11 mount converters.

The products can be updated using Sigma Optimization Pro 1.4.1 or greater for Windows or version 1.4.0 or greater for Mac, as well as with the Sigma USB Dock.