The design of this lens is all about providing flexible and enjoyable user experience. The compact and lightweight Sigma 100-400mm f5-6.3 Contemporary DG DN OS Lens is full of features that allow the use of this lens in a range of situations. At a glance, the telephoto lens is also capable of 1:3.8 ratio macro photography with a minimum focal distance of just 160cm. It features a push/pull zoom in addition to twist zoom ring, an HSM for quick and quiet AF and optical stabiliser that helps reduce camera shake. Sigma has also included several glass elements and coatings that will lessen colour fringing, chromatic aberrations, lens flare and ghosting.