KIT INCLUDES: Sigma 878 USB Dock Lens Firmware + Altura Photo Lens Pouch + Altura Photo Cleaning Kit + MagicFiber Microfiber Cleaning Cloth.</br>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.</br>COMPATIBLE with: 24mm F1.4 DG HSM 35mm F1.4 DG HSM 50mm F1.4 DG HSM 24-105mm F4 DG OS HSM 120-300mm F2.8 DG OS HSM 150-600mm F5-6.3 DG OS HSM (S and C) 17-70mm F2.8-4 DC MACRO OS HSM 30mm F1.4 DC HSM 18-35mm F1.8 DC HSM 18-200mm F3.5-6.3 DC MACRO OS HSM and 18-300mm F3.5-6.3 DC MACRO OS HSM.</br></br>Product Description</br></br><p><b>DIGITAL GOJA IS A SIGMA AUTHORIZED DEALER. 4-YEAR LIMITED WARRANTY.</b> <br>- No used open box or grey-market products are ever sold.</p> <p><b>SIGMA USB Dock for Canon</b> <br>- 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. <br><b>Focus Settings:</b> <br>- 4 Categories of customization for fixed focal length. <br>- 16 Categories of customization for zoom lenses (4 options for focal length) x (4 options for shooting distance). <br><b>For Sports Line:</b> <br>- AF Speed: 3 adjustment modes. <br>- Focus Limiter: Customize auto focus range. <br><b>OS:</b> <br>- 3 adjustment modes. <br><b>SIGMA Optimization Pro</b> <br>For Windows: <br>* Your computer must meet the following criteria for the software to operate: <br>- Core 2 Duo or faster pro