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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, calibrate the lens and other customizations such as 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. Sigma Photo Pro is available for Mac and PC computers.
Updating Lens Firmware: It is possible to update the lens firmware via the internet.
Focus Settings: 4 Categories of customization for fixed focal length.
16 Categories of customization for zoom lenses (4 options for focal length) x (4 options for shooting distance).
Full-time MF Setting:* It is possible to adjust the timing to operate the Full-time MF function by customizing how much rotation of the focus ring is required.