Sigma 28-200mm f/3.5-5.6 DG IF Macro Aspherical Lens for Canon SLR Cameras Compact, high-zoom ratio lens, ideal for full-frame digital SLR cameras Multi-layer lens coating and lens design reduces flare and ghosting Features zoom lock switch to prevent "zoom creep" Lens construction features 16 elements in 14 groups For Canon 35mm and digital SLR cameras; includes detachable lens hood