CANON EF 75-300MM 1:4-5.6 USM III LENS 75-300mm telephoto zoom lens with f/4-5.6 maximum aperture for Canon SLR cameras Improved mechanism makes zooming smoother; front part of zoom ring sports silver ring Measures 2.8 inches in diameter and 4.8 inches long; weighs 16.8 ounces; 1-year warranty 4.9-foot closest focusing distance; 32- to 8-degree diagonal angle of view