The Sigma USB Dock lets photographers to connect their SIGMA Art, Contemporary, or Sports lens to a computer, and update the lens firmware and adjust focus position and other parameters. Exclusive SIGMA Optimization Pro software makes customization easy. It is possible to select the autofocus speed and adjust the focus limiter and Optical Stabilizer (OS) function. Updating the firmware can be done via the internet (internet connection required). 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). 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.* Compatible with 24mm F1.4 DG HSM Art, 50mm F1.4 DG HSM Art, 24-35mm F2 DG HSM Art, 150-600mm F5-6.3 DG OS HSM Sports, 150-600mm F5-6.3 DG OS HSM Contemporary. For Sports Line: AF Speed: 3 adjustment modes.Focus Limiter: Customize auto focus range. OS: 3 adjustment modes.* Also compatible with 150-600mm F5-6.3 DG OS HSM Contemporary. Compability Chart Product Line Firmware Update Focus Setting OS AF Speed Focus Limiter DG 14mm F1.8 DG HSM Art ✓ ✓ ✕ ✕ ✕ 20mm F1.4 DG HSM Art ✓ ✓ ✕ ✕ ✕ 24mm F1.4 DG HSM Art ✓ ✓ ✕ ✕ ✕ 35mm F1.4 DG HSM Art ✓ ✓ ✕ ✕ ✕ 50mm F1.4 DG HSM Art ✓ ✓ ✕ ✕ ✕ 85mm F1.4 DG HSM Art ✓ ✓ ✕ ✕ ✕ 500mm F4 DG OS HSM Sports ✓ ✓ ✓ ✕ ✕ 135mm F1.8 DG HSM Art ✓ ✓ ✕ ✕ ✕ 12-24mm F4 DG HSM Art ✓ ✓ ✕ ✕ ✕ 24-35mm F2 DG HSM Art ✓ ✓ ✕ ✕ ✕ 24-105mm F4 DG OS HSM Art ✓ ✓ ✕ ✕ ✕ 100-400mm F5-6.3 DG OS HSM Contemporary ✓ ✓ ✓ ✕ ✕ 120-300mm F2.8 DG OS HSM Sports ✓ ✓ ✓ ✓ ✓ 150-600mm F5-6.3 DG OS HSM Sports ✓ ✓ ✓ ✓ ✓ 150-600mm F5-6.3 DG OS HSM 150-600mm F5-6.3 DG OS HSM Contemporary ✓ ✓ ✓ ✓ ✓ DC 17-70mm F2.8-4 DC MACRO OS HSM Contemporary ✓ ✓ ✕ ✕ ✕ 30mm F1.4 DC HSM Art ✓ ✓ ✕ ✕ ✕ 18-35mm F1.8 DC HSM Art ✓ ✓ ✕ ✕ ✕ 18-200mm F3.5-6.3 DC MACRO OS HSM Contemporary ✓ ✓ ✕ ✕ ✕ 18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary ✓ ✓ ✕ ✕ ✕ 50-100mm F1.8 DC HSM Art ✓ ✓ ✕ ✕ ✕ OS Function, AF Speed and Focus limiter are only adjustable with the lenses with a custom mode switch **DN Lenses are not compatible with the USB dock currently.
