The Sigma 16-28mm f/2.8 DG DN Contemporary Lens for Sony E is a compact, high-performance ultrawide zoom meant to complement a photographer's arsenal by providing a versatile range of focal lengths in a small and lightweight package, without compromising on optical quality. This lens utilizes a complex arrangement of specialized aspherical and low-dispersion glass elements to effectively suppress chromatic aberrations for improved clarity and color accuracy. This design feature allows for almost no balance point shift and a fixed front element, making it an ideal instrument for videography, travel, and landscape photography. Two large-diameter aspherical elements control spherical aberrations and distortion for increased sharpness and accurate rendering. A stepping AF motor benefits both photographers and videographers with its fast, precise, and near-silent performance. Full-time manual focus control can also be selected.