Tokina 11-16mm F/2.8 ATX Pro DX II Lens for Canon EF DSLR

The Tokina 11-16mm F/2.8 AT-X 116 PRO DX-II is an update to the widely popular and award winning AT-X 116 PRO DX, 11-16 F/2.8 lens. • Aperture Range: f/2.8 to f/22 • Designed for Cameras with APS-C Sensors • Internal Focusing AF Motor • One-Touch Focus Clutch Mechanism • Two Aspheric Lens Elements • Two Super-Low Dispersion Lens Elements • Multi-Layer Coating • 77mm Filter Thread This compact ultra wide-angle zoom has a bright constant F/2.8 aperture, making viewing and auto focus possible in lower light situations while still maintaining a reasonable size and weight. Two Super-Low Dispersion glass elements and two aspheric glass allow the proprietary optical design to achieve excellent contrast and sharpness as well as controlling chromatic aberration. Tokina's exclusive One-touch Focus Clutch Mechanism allows the photographer to switch between AF and MF simply by snapping the focus ring forward for AF and back toward the lens mount for manual focusing. The lens is also designed to stand up to the rigors of daily use by photographers in a wide variety of shooting conditions and environments. Tokin has upgraded the coatings on this lens for improved optical performance.