I believe this is a Sigma product, but since there are no markings, please refer to the photos to determine the manufacturer and compatible models. Instant purchase without comments is welcome. Please check the condition in the photos. * Operation has not been confirmed by attaching it to a camera. * Due to being a used item, there may be minor scratches, scuffs, and peeling. * Please purchase if you understand that this is a used item, has been stored at home, and has been inspected by a non-professional. EX DG #camera #camera #film camera #tripod mount #mount ring #single-lens reflex #lens #telephoto