The Vocas Gear Ring clamps directly around the focus barrel of your Sigma 70-200mm f/2.8 DG DN OS Sports lens by tightening a screw with the included Allen key. Once tightened, the ring becomes seamless, and it features 0.8 MOD gear teeth that give you maximum control over your lens when connected to a compatible cine follow focus.
EAN: 8720041022701