Sigma 10mm - 20mm f/4-5.6 EX DC HSM AF Lens Kit with USA Warranty, for Canon EOS Digital SLR Cameras. with Tiffen 77mm UV Wide Angle Filter, Professional Lens Cleaning Kit

Super wide-angle zoom lens designed exclusively for digital SLR camerasCovers a superwide angle of view 102.4°to 63.8°Three pieces of Special Low Dispersion (SLD) elements and three aspherical lens elements produce top quality optical performance.Inner focusing system ensures the length of the lens remains unchanged whilst controlling aberrations.Equipped with HSM (Hyper Sonic Motor) system
Product Description10-20mm F4-5. 6 EX DC HSM lens allows enjoyment of super wide-angle photography

Source: Digital Camera and Video Store...