A remarkable optical performance and a full range of functionalities in a compact body for exceptional lightweight shooting.With the levels of optical performance and functionalities essential for full-fledged shooting packed into a lightweight and compact body, which is a key in field photography, the Sigma 100-400mm F5-6.3 Dg Dn Os | Contemporary is an ultra-telephoto zoom lens that invites you to take it with you on casual outings.The state-of-art optical design technology ensures edge-to-edge high-resolution and high-contrast image quality throughout its entire focal range. This new lens achieves high image quality which rivals that of standard zoom lenses such as the Sigma 24-70mm F2.8 Dg Dn | Art, ensuring a perfect match with these lenses while shooting.The level of bokeh and compression effect only achieved by an ultra-telephoto lens provides a fresh perspective to ordinary everyday scenes.