Sigma has announced firmware updates for two of its most recent lenses, the 35mm F1.4 DG HSM A012 (Canon mount) and 17-70mm F2.8-4 DC Macro OS HSM C013 (Canon, Nikon and Sigma mounts). The lenses must be updated using Sigma’s USB Dock, and owners should download the latest Version 1.1 of Sigma Optimization Pro software first. At the moment it’s unclear what benefits the lens firmware updates bring. Click through for more details and the download link.
News: Digital Photography Review (dpreview.com)