Sigma DG 150-500mm f5-6.3 APO HSM OS for Canon EFThe Sigma DG 150 500mm f5 6. 3 APO HSM OS is a long lens with a long name. This is a long range supertelephoto zoom lens with pretty solid optical performance. The optical image stabilizer helps keep things steady, and a large grip tripod foot makes for easy handling. In excellent condition overall, with minor cosmetic surface wear; glass clean with just minor dust. Includes lens hood, box, and soft case.