A compact ultra-wide-angle zoom with a constant aperture of F2.8. The full-frame lens Sigma 16-28mm F2.8 DG DN | Contemporary combines outstanding image quality and a large constant aperture of F2.8 with a robust yet lightweight design. This opens up possibilities for L-Mount and Sony E-Mount photographers who expect professional results from a compact product. Thanks to excellently corrected field curvature, the 16-28mm F2.8 DG DN | Contemporary delivers sharp images all the way to the corners, which is crucial for many applications in the wide-angle range. Five FLD lenses and four aspherical elements ensure optimal image quality with minimal optical errors. An internal zoom mechanism keeps the lens length consistent across the entire focal length range, ensuring it remains well-balanced in hand. The minimal shift in the center of gravity during zooming is also advantageous for mounting on a gimbal. A thread at the front simplifies the use of filters. The lens is compactly designed, weighing only 450 g and measuring just 100.6 mm, making it easy to carry around in everyday photography. It particularly appeals to landscape, wedding, and travel photographers who need to carry their gear for hours. Lightweight, extremely powerful, and versatile - the Sigma 16-28mm F2.8 DG DN | Contemporary allows photographers to enjoy complete freedom in the ultra-wide-angle range without worry.