Fast f/1.8 Aperture Zoom. While most zoom-lens apertures top off at f/2.8, the Sigma 18-35mm bests that by 1 1/3-stops. This enables stellar low-light shooting while providing full-frame style depth of field on a crop-frame camera.

Wide to Normal Range. With a 35mm-equivalent focal length of 27mm-53mm, it covers your wide to normal range. This makes it a great option for landscape, event, and street photographers.

Hyper Sonic Motor Autofocus System. Provides fast, smooth, and quiet operation in a wide variety of shooting situations. You can also manually override the autofocus motor at any time by rotating the focusing ring, giving you quick fine-tuning ability.

High Build and Image Quality. As a part of Sigma’s Art lens line, the DC HSM A1 goes through Sigma’s rigorous A1 testing, ensuring high image quality. Its four aspherical elements and five Super Low-Dispersion glass elements are used to minimize distortion and aberrations throughout the zoom range, with Super Multi-Layer coatings for eliminating lens flare and ghosting. The barrel is made of a lightweight Thermally Stable Composite that gives the lens a solid, sturdy feel. This lens also offers internal focusing and zooming.

Dock Compatible. As part of Sigma’s Global Vision series, this lens is compatible with the Sigma USB Dock for Nikon F Lenses (separate rental item), allowing you to adjust the focus limiter, AF speed, microfocus, and OS settings through the Sigma Optimization Pro software.