Specially designed for mirrorless camerasReleased in 2016 as the first of a new series of prime lenses for mirrorless cameras, the 30mm F1.4 Dc Dn | Contemporary combined F1.4 brightness with top-level optical performance. In order to achieve this low f-number in a large-diameter Contemporary lens, Sigma took on a wide variety of challenges, leveraging its latest optical design technologies, incorporating updated video capabilities, and utilizing in-camera digital correction to further improve the lens's optical quality. While prioritizing optical performance, Sigma developed a lightweight, compact package with steady Af that is truly easy to operate.Like the 30mm F1.4 Dc Dn | Contemporary, the 16mm F1.4 Dc Dn | Contemporary features Sigma's advanced design technologies to offer F1.4 brightness while minimizing optical aberrations.