Tokina AT-X 165 PRO DX 16-50mm f/2.8 zoom lens exclusively for Digital SLR cameras with APS-C sensors.* The new Tokina AT-X 165 PRO DX makes an excellent standard lens giving the digital photographer the equivalent of a 24-75mm lens in terms of film. From the nature enthusiast to the portrait artist to photojournalist, everyone will be able to appreciate the AT-X 165's bright F/2.8 constant aperture. This wide aperture allows for faster shutter speeds in low-light conditions or a more shallow depth of field for more pleasing portraits. The out of focus background from a wide aperture setting concentrates attention on the subject giving the photo more strength and intimacy. 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 camera to focus manually. There is no second AF/MF switch on the lens for Canon, everything is accomplished by the focus ring. The front element of the AT-X 165 PRO DX has a newly formulated WP or "Water Proof" optical coating on the glass. This new coating makes marks such as spots left by water or finger-prints much easier to clean than standard multi-coating.** The rear optical group of the lens contains 1 SD (Super-Low Dispersion) glass element to reduce the number of elements (pieces of glass) in the optical design in order to make the lens more compact, light-weight and faster focusing. * The lens is designed for Digital cameras with APS-C sized CMOS and CCD sensors, not designed for cameras with Full Frame sensors. ** Please note, the Tokina AT-X 165 PRO DX lens itself is not waterproof or water resistant. Specifications Recommended Sensor size APS-C Sized (23.7 X15.6mm) CCD or CMOS sensor (with 1.5-1.6x magnification factor) Not designed for cameras with Full Frame sensors. Maximum Aperture f/2.8 Minimum Aperture f/22 Optical Construction 15 Elements / 12 Groups Coatings WP or "Water Proof" optical coating on the glass Zooming System Rotary-type Minimum Focus Distance 11.8 in. (30cm) Macro Ratio 1:4.88 Number of Diaphragm Blades 9 Filter Size 77mm Dimensions 3.3 in. (84mm) X L 3.8 in. (97.4mm) Weight 21.5 oz. (610g)

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