SIGMA 17-50 mm F2.8 EX DC OS HSM for Canon

This  SIGMA 17-50 mm F2.8 EX DC OS is a high-quality zoom lens with optical stabilisation and is meant for use with Canon Digital SLR cameras. This wide-angle lens design is an appropriate and powerful tool for indoor and outdoor use. It has a constant fast F2.8  aperture, optical stabilization and an accurate and fast HSM - Hyper Sonic Motor Focus.
Specifications:
Designed for:Canon Cameras
Optical construction:
17 lenses in 13 groups
Viewing angle:
72.4° - 27.9°
Minimum aperture:
22
Minimum focusing distance:
28cm
Max. ratio of the display:
1:5.0
Filter diameter:
77mm
Size:
83.5 x 91.8mm
Weight:
565g