Sigma 10-20mm F4-5.6 EX DC HSM AF Super Wide Angle Zoom Lens-Sigma 10-20 f/4-5.6 Lenses for Nikon, Canon, Sigma, Sony and Pentax. Sigma 10-20mm EX DC HSM Lens by Sigma offers an ultra-wide zoom solution to digital cameras, Sigma 10-20 f4-5.6 Lens comes from a DC Lens series of Sigma Lenses. Sigma 10-20mm f/4-5.6 is a more compact and lightweight lens, Sigma 10-20mm Lens is not made for 35mm film SLR and full frame SLR cameras. www.microglobe.co.uk