SIGMA USB DOCK By connecting the USB cable to a computer, the SIGMA USB DOCK enables photographers to update the lens firmware and customise features of the lens to their requirements. The adjustment is processed with specially designed software, SIGMA Optimization Pro, which is available as a free download from Sigma's website. Users will be able to update lens firmware, ensuring their lens is never "out of date". Fine focus adjustments are also possible at varying positions of the lens' focal range and focus positions ensuring the focus matches your camera precisely at every zoom and focus position. Sigma's "Sports" lenses also allow further customisation of the AF speed, Optical Stabilisation and Focus Limiter position. Customisation for Art, Sports and Contemporary lenses: Focus Adjustment Settings: 4 Categories of customisation for fixed focal length lenses. 16 Categories of customization for zoom lenses (4 options for focal length) x (4 options for shooting distance). Customisation for Sports lenses: AF Speed: 3 adjustment modes. Focus Limiter: Customize auto focus range. OS: 3 adjustment modes. This USB Dock is only compatible with Sigma's latest Global Vision, A (Art), S (Sports) and C (Contemporary) lenses. A full list of compatible lenses can be found on Sigma's website. SET CONTAINS: Sigma USB Dock Sony Fit
International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Customise features including autofocus speed and focus limiter distances on Sigma's "Sport" lenses. Adjust focus position to match your camera for precise auto focusing. Update lens firmware so your lens is never "out of date". For use with Sigma's Global Vision lenses.Item Weight: 65 Grams. Item Dimensions LxWxH: 4.61 x 3.74 x 1.97 inches. Compatible Devices: Sigma 20mm F1.4 DG HSM, Sigma 24mm F1.4 DG HSM, Sigma 35mm F1.4 DG HSM, Sigma 30mm F1.4 DC HSM, Sigma 18-35mm F1.8 DC HSM, Sigma 50-100mm F1.8 DC HSM, Sigma 24-105mm F4 DG OS HSM / DG HSM, Sigma 50mm F1.4 DG HSM, Sigma 17-70mm F2.8-4 DC MACRO OS HSM / DC MACRO HSM, Sigma 18-200mm F3.5-6.3 DC MACRO OS HSM / DC MACRO HSM, Sigma 18-300mm F3.5-6.3 DC MACRO OS HSM / DC MACRO HSM, Sigma 150-600mm F5-6.3 DG OS HSM, Sigma 120-300mm F2.8 DG OS HSM, Sigma 150-600mm F5-6.3 DG OS HSM See more. Hardware Interface: USB. Color: Black. Brand: Sigma. Manufacturer: SIGMA. Date First Available: February 18, 2016. Is Discontinued By Manufacturer: No. Best Sellers Rank: #16 in Camera Lens Adapters & Converters #20 in SLR Camera Lenses. Customer Reviews: 4.6 out of 5 stars 4,099 ratings 4.6 out of 5 stars. Item model number: 878205. : B00I3BTAD6. Item Weight: 2.29 ounces. Product Dimensions: 4.61 x 3.74 x 1.97 inches.