Model: ATX116PRODXCII. The Tokina 11-16mm f/2.8 AT-X116 Pro DX II Digital Zoom Lens is an ultra-wide angle lens designed for Canon EOS cameras with a fast f/2.8 aperture for better photography in low-light situations while maintaining a reasonable size and weight. This lens has a slightly shorter zoom range to maintain optical quality at wide apertures. 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. Its angle of view ranges from 82-104º and it can focus as close as 11.81" (0.3 m). Nine shutter blades in the aperture help to create soft out-of-focus backgrounds and two Super-Low Dispersion glass elements and two aspheric elements help to achieve this lens' excellent contrast, sharpness and minimal chromatic aberration. A Water Repellent Optical Coating is placed to protect the lens during inclement weather. As an update to their AT-X 116 PRO DX, Tokina has improved the multi-layer coatings to minimize light reflection and improve optical performance. The PRO DX-II has a silent focusing motor which is ideal if shooting video with your digital camera.