Sigma 500mm F4.5 EX DG APO HSM Black

500mm F4.5 EX DG APO HSM, Sony DG - Designed for use with full frame digital SLR cameras. May also be used with smaller APS-c size sensors with a corresponding effective increase in focal length to about 750 with most cameras
- HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus
- Amazingly compact. Approximately 14 inches long & slightly less than 7pounds
- Inner focusing system which enables responsive & fast auto focus speed and overall length does not change during focusing.
- Soft case, lens hood, circular PL filter are included. It is equipped with fixed tripod socket.