Wide-to-Portrait Zoom. The Sigma 24-70mm f/2.8 DG DN Art’s wide-to-portrait zoom range makes it great for portrait, wedding, and event photography. Its fast f/2.8 aperture lets you shoot in low light and offers excellent focus control when using shallow depth-of-field techniques, while the rounded eleven-blade diaphragm helps produce large, pleasing bokeh. Using an APS-C sensor camera? You’ll have a focal-length range equivalent to 36-105mm.

Stepping Autofocus Motor. The stepping-motor system provides fast, nearly silent autofocus operation for stills and video alike, while an optimized autofocus algorithm gives you smooth focusing performance. You can use the dedicated AF/MF switch to toggle between autofocus and manual-focus modes on the fly, and you can program the integrated Autofocus-Lock button to adjust additional functions, giving you even more options and capabilities.

Advanced Optics. This lens’s fifteen-group/nineteen-element optical design includes three aspherical elements, two Special Low-Dispersion elements, and six F Low-Dispersion elements to minimize chromatic aberrations, distortion, and vignetting while providing maximum sharpness, color accuracy, and clarity.

High-Quality Build. The Sigma 24-70mm is dust- and splash-resistant, so that you can use it in adverse conditions. It also boasts a brass bayonet mount for maximum durability.