The Sigma 16-28mm f/2.8 DG DN Contemporary Lens is an exceptional addition to any photographer's collection, offering a compact and high-performance ultrawide zoom that balances versatility and optical quality. Designed for ease of use and portability, this lens features a constant f/2.8 aperture, allowing photographers to utilize faster shutter speeds in low-light scenarios and achieve stunning close-up shots with a shallow depth of field. The sophisticated optical design incorporates specialized aspherical and low dispersion glass elements to minimize chromatic aberrations, ensuring enhanced clarity and color accuracy. Additionally, Super Multi-Layer and Nano Porous Coatings reduce lens flare and ghosting, providing improved contrast and color rendering even in strong lighting conditions. One of the standout features of this lens is its inner zoom and focus mechanism, which keeps the lens's dimensions constant throughout the zoom range and at all focus distances. This design ensures minimal balance point shift and a fixed front element, making it an ideal choice for videography, travel, and landscape photography. The lens also boasts a rounded nine-blade diaphragm, contributing to a smooth and pleasing bokeh quality, while the 72mm front filter thread allows for the use of standard screw-in filters, enhancing its practicality. The Sigma 16-28mm f/2.8 DG DN Contemporary Lens is equipped with a stepping AF motor that offers fast, precise, and near-silent autofocus performance, benefiting both photographers and videographers. Full-time manual focus control is also available, providing greater flexibility in various shooting situations. Built to withstand the rigors of different environments, this lens features weather-resistant construction, ensuring better mounting accuracy and rigidity.This Bundle Includes: Sigma 16-28mm f/2.8 DG DN Lens Sony E64 GB Memory Card with Wallet Memory Card ReaderLens Pouch 3-Piece Filter KitFull Cleaning Kit