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. Sigma Photo Pro is available for Mac and PC computers.
Focus Settings:
- 4 Categories of customization for fixed focal length;
- 16 Categories of customization for zoom lenses. More information: Packaging content | Cables included | USB | Features | Product colour | Black |  | Interface | USB |
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