Sigma Collar TS-41

Tripod Socket This accessory tripod mount collar provides greater tripod mounting surface and more robust construction than the standard tripod mount collar, supplied with some Sigma lenses. Available for: APO 70-200mm F2.8 EX HSM APO 100-300mm F4 EX IF HSM APO 135-400mm F4.5-5.6 Aspherical RF APO 120-300mm F2.8 EX IF HSM APO 170-500mm F5-6.3 Aspherical RF APO MACRO 180mm F3.5 EX IF HSM APO 300mm F2.8 EX HSM