The Sigma DC lightweight lens weighs about 14 oz and is designed for Canon digital single lens reflex cameras. This Sigma lens has a lens coating to cut flare and ghosting. The lightweight lens also has a high zoom ratio that is 11 to 1 and has auto and manual focusing. This Sigma 18-200 mm f/3.5-6.3 aspherical lens has a 17.7-inch minimum focusing distance at all focal lengths. The Sigma lens has two special low dispersion glass elements and two hybrid aspherical lenses. This lightweight lens is compact and has an inner focusing system. The Sigma DC dimensions are 3.3 x 3.1 x 3.1-inches and the filter size is 62 mm. The Sigma lens length doesn’t change when the camera is focusing, which ensures convenience and ease in handling. It has a zoom lock to avoid moving of the lightweight lens while carrying and travel. Sigma DC field of view lens is the equivalent to a 29-320 mm on full frame cameras.