Sigma 18-300mm F3.5-6.3 Contemporary DC Macro OS HSM Lens for Canon Maximum Aperture Range: f/3.5-6.3 Focal Length : 18-300 mm, Minimum focusing distance -39cm/15.3 inch; Offers a maximum magnification ratio 1:2 and changeable angles of view enables zoom-macro photography One SLD and Four FLD Elements, Super Multi-Layer Coating Hyper Sonic Motor AF System Optical Stabilization