Super-telephoto picture coverage of 6°10′. Internal Focusing (IF) design for easy handling and smooth focusing down to 15 feet (4m). 7 elements in 6 groups. Extra-Low Dispersion glass for outstanding picture quality. Focusing ring allows adjustment to a particular click-stop setting for rapid refocusing. Built-in telescopic hood and rotatable tripod socket. Accepts standard Nikon 72mm filters, supplied separately.