With the Sigma 16mm F1.4 Dc Dn Contemporary Lens for Sony E, you can experience the joy of shooting wide open with F1.4 brightness. This lens, the first of its kind for mirrorless Sony E-mount cameras in the Aps-c format, offers a 24mm focal length (35mm equivalent) and F1.4 brightness. It's the large-diameter wide-angle lens that mirrorless camera enthusiasts have been waiting for.Designed for everyday use, this lens is part of Sigma's Dn series for mirrorless cameras, which are known for their superior performance and key focal lengths. The 16mm F1.4 Dc Dn Contemporary lens combines F1.4 brightness with top-tier optical performance, making it a must-have for any photography enthusiast.The lens structure, comprising 16 elements in 13 groups, includes the finest materials to effectively minimize optical aberrations. It offers superb resolution at wide-open aperture and throughout the aperture range.