The Sigma 14-24mm F 2.8 DG HSM Art is the ideal ultra-wide-angle zoom
lens for the most demanding photographers. With a constant F 2.8 aperture
throughout the entire zoom range, it? s designed for 50-megapixel plus
cameras for outstanding high-resolution image quality. An updated Hyper
Sonic Motor (HSM) provides fast and accurate autofocus. 3 FLD and 3 SLD
glass elements; 3 aspherical lens elements; and 1 large-diameter
aspherical element minimize chromatic aberration resulting in extremely
sharp images. Outdoor shooters will appreciate the dust- and
splash-proof construction with special sealing at the mount connection,
manual focus ring, zoom ring, and cover connection. With the growing
popularity in multi-camera VR videography, a new Front Conversion
Service is available to convert to a round hood for these specialized
applications. Like each and every Global Vision Lens, the Sigma 14-24mm
2.8 DG HSM Art is handcrafted at our single factory in Aizu, Japan and
undergoes individual evaluation before leaving Sigma? s facility.