Vivitar 28-105mm f/2.8-3.8 Series 1 Macro is a wide-angle to portrait length telephoto zoom lens ideally suited for landscapes, groups and portrait photography. The lens covers the most popular focal length from wide-angle to telephoto. It has a versatile zoom has macro capability for a magnification of 1:6.8 close-ups. Its fast aperture allows the lens to excel in low light situations. The added multi-coating minimizes flare while enhancing contrast and sharper images. This lens features 14 elements in 12 groups optical construction, 8 aperture blades, 8.66 inches close focusing distance and 67mm filter thread.