Sigma USB Dock - Canon EF-M Fit

This USB dock has been specifically designed for use with Sigma Contemporary, Art and Sport lenses (as well as their accessories). It allows you to update firmware and customise and configure your lens settings to better cater to your needs as a photographer. You can also customise the rotation sensitivity of your focus ring (on certain lenses) whilst in manual focus mode.

Price: 59.99 from Wex Photo Video