The new 100-400mm f/5-6.3 Contemporary telephoto zoom lens offers great IQ and usability with its lightweight, compact, dust- and splash-proof design. Equipped with the newly released Sigma OS and AF, the lens provides exceptional performance at lower shutter speeds. Highly versatile, the 100-400mm f/5-6.3 Contemporary also features Sigma's unique macro function (1:3.8 ratio) for perfecting close-ups and distance shots.