Sigma USB Dock UD-01E0 for Canon EF-Mount Lenses KITCHEN Focal Length: 35 mm

Focal Length: 35 mm

Nikon D40x

It uses a replaceable CR2032 battery that lasts about a year before it needs to be replaced

and protective rubber panels provide ample room for a secure and comfortable grip in all conditions

you can choose from three modes when using compatible lenses with vibration control

Sigma USB Dock UD-01E0 for Canon EF-Mount Lenses KITCHEN Focal Length: 35 mmSigma USB Dock UD 01E0 for Canon EF Mount Lenses Update Lens Firmware and Adjust Settings For Use with Sigma Global Vision Lenses Compatible with Canon EF Mount Lenses The Sigma USB Dock 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