Sigma 70-200mm f2.8 DG HSM OS Sport for Canon EF  type_Bags and Cases and have a really solid

and have a really solid positive lock/unlock feel

and the distortion is well controlled

TTL flash control

The CST transmitter slips into any standard hot shoe

with 3/8" threads top and bottom

Sigma 70-200mm f2.8 DG HSM OS Sport for Canon EF &nbsptype_Bags and Cases and have a really solidThe Sigma 70 200mm f2. 8 DG HSM OS Sport is a high quality telephoto zoom lens for Canon EF mount cameras. It's got a sturdy metal build, quick focusing, and an excellent image stabilizer. In excellent condition, with only light cosmetic wear. Includes original hood and case but, worth noting, it does not include the full original tripod foot. You can still attach a tripod, though: there's a standard 1 4" 20 thread.