Full-Frame Portrait Lens. The Sigma 85mm f/1.4 gives users a much-needed Art-Series portrait lens. Dedicated portrait shooters, wedding photographers, event photographers, and anybody who needs a short tele lens will all benefit. The fast f/1.4 aperture allows great low-light capability as well as a very shallow depth-of-field. Using a APS-C sensor camera? You’ll have a focal length equivalent to 127.5mm.

High Image Quality. As a part of Sigma’s Art lens line, this lens goes through Sigma’s rigorous A1 testing to ensure high image quality. The 12-24mm f/4’s optics are quite impressive. Two SLD glass elements, one high-refractive index element, and one aspherical element correct for chromatic aberrations throughout the entire focusing range, while ensuring high image sharpness, clarity, and contrast. A Super Multi-Layer Coating minimizes lens flare and ghosting to help produce high-contrast, color-accurate images.

Hyper Sonic Motor Autofocus System. The HSM 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.

Dock Compatible. This lens is compatible with the Sigma USB Dock for Nikon F Lenses (separate rental item), allowing you to adjust the focus limiter, autofocus speed, and microfocus settings through the Sigma Optimization Pro software.