The Canon EF III lens is a telephoto zoom lens that allows you to shoot clear close-up photos from afar. With a 13 elements in 9 groups lens construction, this Canon camera lens reduces the chromatic aberrations in the photos. This Canon camera lens has a bright f/4-5.6 maximum aperture that allows you to take shots in low-light conditions. With a focal length of 75-300 mm, this 75-300 mm f/4-5.6 telephoto zoom lens lets you create a feeling of depth in your photos. Control the amount of light that passes through this Canon camera lens, using the seven diaphragm blades. The Canon EF III lens easily accommodates 58 mm filters that offer protection from dust and graze. Weighing a mere 480 gm, this 75-300 mm f/4-5.6 telephoto zoom lens is easy to carry on all your travel expeditions.