Considerably more compact than its predecessor, the Sigma 24-70 mm f/2.8 IF EX DG HSM Standard Zoom Lens with a large usable aperture makes it absolutely ideal for general photography, including portraits & landscapes. Bright aperture Perfect for shooting indoors, at dusk or in dim lighting, the f/2.8 maximum aperture is available over the entire zoom range. Combined with ELD (Extraordinary Low Dispersion) glass, SLD (Special Low Dispersion) glass & two aspherical glass elements, you can enjoy high image quality throughout the entire focal length, with excellent correction for all types of aberrations. Hyper Sonic Motor Thanks to HSM (Hyper Sonic Motor) the EX DG HSM has quiet, high-speed AF, with a manual focus override that can be activated by rotating the focus ring. Reduced flare & ghosting Super Multi-Layer Coating is used to reduce flare & ghosting. Combined with an optical design engineered to be resistant to strong incident light, the f/2.8 IF EX DG HSM provides sharp, high contrast images even in backlit conditions. The petal-type hood also blocks out superfluous lights to reduce internal reflections. The Sigma 24-70 mm f/2.8 IF EX DG HSM Standard Zoom Lens for Canon gives you the latest in optical design & performance & is brilliantly compact, so you can take high quality images in a range of shooting conditions.