EXTRA WIDE MIRROLESS WIDE-ANGLE ZOOM MODEL NO :  AF14-24MM F/2.8 DG HSM (A) F/SE MOUNT Product Highlights Category Lenses Wide Angle Lenses, Classs Art Typical Photography Creative, Travel, Landscape, Wedding & Events, Nature & Wildlife Full Frame Lens with APS-C compatibility Bright F2.8 aperture throughout entire zoom range Dust- and splash-proof construction with weather sealing Rear Filter Holder FHR-11 Virtually zero distortion at infinity focus WARRANTY 1 YEAR The Sigma 14-24mm F2.8 DG HSM Art is the ideal ultra-wide-angle zoom lens for the most demanding photographers. With a constant F2.8 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. SPECIFICATIONS Lens Construction 17 Elements in 11 Groups Angle of View 114.2°-84.1° Number of Diaphragm Blades 9 (rounded diaphragm) Minimum Aperture f22 Minimum Focusing Distance 26-28cm/10.2-11.0in Maximum Magnifications 1:5.4 Dimensions (Diameter x Length)ø96.4mm x 135.1mm/3.8in. x 5.3in. Weight 1,150g/40.6oz.