Tamron SP 17-50MM F/2.8 Di II VC

Product Overview

The Tamron SP designation is reserved for lenses developed with special emphasis on extraordinary photographic performance. Engineers are free to innovate in an uncommon atmosphere where optical performance comes before price, resulting in lenses that satisfy the demands of discerning photographers.

The compositional options afforded by the SP 17-50mm F/2.8 Di-II VC's wide-to-moderate-telephoto zoom characteristics are prized by experienced photographers, rendering a picture angle range approximating a 26-78mm lens on a full frame DSLR or a 35mm SLR. A fast and constant F/2.8 maximum aperture allows cluttered backgrounds to be softly obscured, additional freedom in lowlight conditions and added viewfinder brightness. State-of-the art properties, including XR (Extra Refractive Index) and LD (Low Dispersion) glass in an optical formula employing 19 elements and 14 groups—assures sharpness, optimal contrast and breathtaking image fidelity. Its form factor and handling characteristics can be traced to the use of aspherical element design and internal focus. Tamron's proprietary tri-axial VC (Vibration Compensation) image stabilization adds to image sharpness and further expands low-light shooting freedom by combating image blur resulting from camera shake. Tri-axial VC addresses the adverse effects of camera shake in three planes making it possible to shoot handheld at as many as four shutter speeds slower than would otherwise be possible.

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Di-II lenses are performance-engineered expressly for digital SLR cameras with image sensors commonly referred to as APS-C, measuring approximately 24mm x 16mm. Recommended for APS-C photographers who... - Prize prime lens characteristics - Need a standard zoom lens that offers a fast F/2.8 aperture for low/natural light shooting. - Need the sharpness and low-light shooting potential afforded by Tri-axial VC. - Demand optical performance and handling characteristics designed to meet the needs of professional and experienced non-professional photographers. 17mm (27mm full frame) 28mm (43mm full frame) 50mm (77mm full frame) Tamron Di-II lenses are engineered expressly for digital SLR cameras with image sensors commonly referred to as APS-C, measuring approximately 24mm x 16mm. Rendering an ideal image circle for APS-C sensors, Di-II lenses also include properties to optimize digital imaging performance. Rely on Tamron Di lenses designed for digital SLR cameras. Specifications Model B005 Lens Construction (Groups/Elements) 14/19 Angle of View 78°45'-31°11' (APS-C size equivalent) Diaphragm Blade Number 7 Minimum Aperture F/32 Minimum Focus Distance 11.4in.(0.29m) Macro Magnification Ratio 1:4.8 Filter Diameter ø72 Weight 570g (20.15oz) Diameter x Length ø3.13 x 3.7in. (ø79.6 x 94.5mm) Accessory Flower-shaped lens hood Mount Canon, Nikon with Built-In Motor