Sigma 18-200mm f/3.5-6.3 DC Lens for Canon Digital SLR Cameras 18-200mm focal length 27-300mm equivalent focal length on APS-C cameras, 28.8-320mm equivalent focal length on Canon APS-C cameras F3.5-6.3 maximum aperture; F22-40 minimum Micromotor-type AF motor without full-time manual focusing Image stabilization, Auto panning detection 72mm filters 0.45m/17.72" minimum focus Available in Canon EF, Nikon F (DX), Sigma SA mounts High zoom ratio (11:1) lens designed for Canon digital SLR cameras 18 to 200 mm focal length 2 Special Low Dispersion glass elements; 2 hybrid aspherical lenses Compact, lightweight construction Lens coating reduces flare and ghosting