Sigma Lens USB Dock (Canon EF Mount)

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The Sigma lens USB dock allows photographers to mount Sigma global vision lenses (Canon mount, except DN lenses) to a computer to update firmware, calibrate the lens and adjust the focus parameter. For the Sports category, changes can be made to: Autofocus speed, focus limiters, manual focus override and optical stabilization functionality. Updating the firmware can be done via the internet via the Sigma Photo Pro software (available for Mac and PC computers). Show more