The Sigma 16mm 1. 4 DC DN Contemporary is a high performance prime with a large aperture of F1. 4 designed for APS-C Mirrorless Micro Four Thirds cameras. The Contemporary line is part of Sigma Global Vision and is the perfect blend of image quality and compact size. The large aperture is ideal for lowlight and for creating depth of field and its small size makes it highly portable. The optical design and stepping motor deliver smooth autofocus during video shooting. Like all SGV lenses, each lens is hand crafted in our single factory in Aizu Japan, individually inspected before shipping.