Sigma's earlier 24-70mm f/2.8 — same as ID 714/769, possible mount variant in the database.
The Sigma 24-70mm f/2.8 IF EX DG HSM is an earlier generation Sigma constant f/2.8 standard zoom. This may be a specific mount variant or earlier revision of the same lens listed as IDs 714 and 769 in the database.
Optically decent — sharp in the centre but trailing first-party alternatives. Constant f/2.8. IF internal focusing. EX professional build. HSM motor. DG full-frame optimised. Aspherical and SLD elements. Budget f/2.8 option.
Available for multiple mounts. 82mm filter thread. Approximately 790g. No weather sealing. Full-frame coverage. EX quality construction. Minimum focus distance approximately 38cm.
Available used very cheaply. The Art-line successor is dramatically better. Likely a duplicate of IDs 714 or 769 with different mount. Only worth considering at very low prices.