BRAND NEW, NEVER USED.  
SUPPLIED IN FULL RETAIL PACKAGING WITH TAX INVOICE.
MADE IN JAPAN: SUPERIOR QUALITY AND THE FINEST CRAFTSMANSHIP.
All lenses & flashguns sold come with a FULL Australian 24 month warranty. 
All lenses & flashguns are sourced via the Australian importer and distributor. 

SIGMA USB DOCK
MICRO TUNE, CUSTOMIZE, AND UPDATE YOUR LENS

+ Update Lens Firmware
+ Customize: Autofocus, OS, Focus
+ Compatible with Global Vision Lenses (except DN 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. 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 (4 options for focal length) x (4 options for shooting distance).

Sports Line:
AF Speed: 3 adjustment modes.
Focus Limiter: Customize auto focus range.
OS: 3 adjustment modes.

The Sigma Optimization Pro can be downloaded at the Sigma Global Vision site.