sigma 70-200mm f 2.8 ex dg hsm ii macro zoom lens for nikon digital slr cameras
enjoy improved optical performance while retaining close-up ability with the large aperture sigma 70-200mm macro zoom lens . the lens -- which offers a minimum focusing distance of 39.4 inches and a maximum magnification ratio of 1 3.5 -- is suitable for a variety of subjects including portraits landscape shots and macro photos . the lens offers two special low-dispersion sld and three extraordinary low-dispersion eld glass elements providing excellent correction for all types of aberrations and creating high-quality images throughout the entire zoom range . the super multi-layer coating meanwhile reduces flare and ghosting . finally the lens incorporates a hyper sonic motor hsm which ensures a quiet and high-speed autofocus af as well as full-time manual focusing ability . other features include inner focusing and inner zooming systems a removable tripod collar and a 77mm filter size . specifications focal length 70-200mm maximum aperture f 2.8 lens construction 18 elements in 15 groups angle of view 34.3 to 12.3 degrees number of diaphragm blades 9 minimum aperture f 22 minimum focusing distance 39.4 inches filter size 77mm hood petal type corresponding af mounts sigma canon nikon sony minolta pentax four thirds dimensions 3.4 inches in diameter and 7.3 inches long weight 48.3 ounces warranty 4 year