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The newly developed TS-81 tripod socket is designed for ease of use when photographing with the Sigma 150-600mm 5-6.3 DG HSM OS Sports lens. With the ability to adjust the center of gravity, the new optional tripod socket also features safety screws to prevent the lens from falling and improved balance when the lens is extended as well as when using a teleconverter or battery pack. Two mounting threads are used, 1/4 and 3/8, for use with an Arca Swiss quick release plate or other tripods.
This product is compatible with the Arca Swiss screw knob clamp. Please ensure that it is screwed and fixed tightly. This product is not designed for lever type clamps. There are some lever clamps available that do not fix firmly and safely.
Please ensure that 2 Safety Stopper Screws (supplied) are always fixed so that the Arca Swiss clamp will not fall off.