Obiettivo Sigma 17-50mm F2.8 EX DC HSM per Pentax APS-C usato
✔ - HSM (Hyper Sonic Motor) for fast and quiet autofocus. ✔ C:Model: 17-50mm F2.8 EX DC HSM. ✔ C:Autofocus: Yes (HSM - Hyper Sonic Motor). ✔ - Bright constant aperture of F2.8. ✔ C:Lens Type: Standard Zoom Lens.