The Sigma 10-20 mm f/3.5 EX DC HSM Wide-angle Zoom Lens produces striking images and gives avid photographers a great range of artistic expression. Ultra wide-angle zoom The f/3.5 EX DC HSM’s wide-angle of view from 102.4° creates a greater freedom of expression simply by rotating the zoom ring. The constant aperture of f/3.5 across the entire zoom range provides bright images, helping photographers check focusing or composition, ideal for architectural, indoor and landscape photography. You can also use the wide-angle lens to create an exaggerated perspective between the subject and background, beautifully emphasising, for example, the breadth of a landscape. Superior image quality Capture stunning, high resolution photos thanks to the two ELD (Extraordinary Low Dispersion) and one SLD (Special Low Dispersion) glass elements, which effectively correct all types of aberrations. The super multi-layer coating also reduces flare and ghosting, providing high contrast images throughout the zoom range. Hyper Sonic Motor Thanks to HSM (Hyper Sonic Motor) the EX DC HSM has a quiet, high-speed Autofocus, with a manual focus override that can be activated by rotating the focus ring. The Sigma 10-20 mm f/3.5 EX DC HSM Wide-angle Zoom Lens for Nikon DSLRs reduces distortion and captures beautifully sharp and high-quality images across the entire zoom range.