The Sigma USB Dock for Canon Lenses allows you to connect your Sigma Global Vision lenses to your computer in order to update firmware and adjust focus setting parameters using the Sigma Optimization Pro software.
This dock is only compatible with the Sigma Art, Contemporary, and Sports line lenses featuring a Canon EF lens mount.
Limited 1-Year North and South America Warranty Against Manufacturing and Workmanship Defects
Limited 3-Year U.S.A. Extended Warranty Extension Against Manufacturing and Workmanship Defects
Sigma USB Dock for Canon Lenses