The 24-35mm f/2 DG HSM Art Lens from Sigma is part of their expanding Global Vision line, and offers the world's first full-frame zoom lens with a constant f/2 aperture. As part of Sigma's Art series, it offers high quality optics with the use of one "F" Low Dispersion and seven Special Low Dispersion glass elements in addition to two aspherical lenses. This system minimizes the appearance of spherical aberration, axial chromatic aberration and field curvature. A Super Multi-Layer Coating is also present to reduce flare and ghosting for sharp, high-contrast images.
A Hyper Sonic AF Motor compliments this impressive build with near silent operation and an optimized autofocus algorithm for fast, accurate tracking. The body of the 24-35mm is constructed of a Thermally Stable Composite material which performs well in all conditions. The barrel also has a focus ring with full-time manual override and the system is designed for completely internal focusing. For total optimal performance this lens is also compatible with Sigma's USB Dock for firmware updates and AF microadjustment.
