Sigma UD-01NA USB Dock for Nikon F-Mount Lens (Select Sigma Art, Contemporary, or Sports Lenses)
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Sigma UD-01NA USB Dock for Nikon F-Mount Lens (Select Sigma Art, Contemporary, or Sports Lenses)
The Sigma USB dock works in conjunction with Sigma Optimization Pro software in order to connect a photographers lens to their personal computer to update firmware and other parameters such as focus, and for the Sports category: Autofocus speeds, focus limiters, and optical stabilization functionality. Updating the firmware can be done via the internet.