Sigma's original pre-Art 70-200mm f/2.8 — same family as IDs 868/1132, early version.
The Sigma 70-200mm f/2.8 EX APO DG HSM is an early version of Sigma's constant f/2.8 telephoto zoom — predating both the Mark II (ID 1132) and the Sports line. It offered f/2.8 speed at budget pricing.
Same family as IDs 868 and 1132 — constant f/2.8 with APO glass and HSM motor. The earliest version in the lineup. Optically decent but trailing first-party alternatives. Full-frame coverage.
Available for multiple DSLR mounts. 77mm filter thread. Approximately 1370g. No weather sealing. No OS stabilisation. Tripod collar. EX build quality.
Check against IDs 868 and 1132 for duplicate. Very cheap used. The Sports version is dramatically better. Only for absolute budget constant f/2.8 telephoto needs.