Optimized for Digital SLR

The use of XR (Extra Refractive Index) glass optimizes the overall distribution of optical power, and also reduces various aberrations to the absolute minimum while achieving remarkable compactness. In addition, suitable positioning of two hybrid aspherical elements serves to maintain imaging performance and to shorten and compress the entire optical system.

LD Glass

An LD (Low Dispersion) glass element is used to accomplish effective compensation of on-axis and lateral chromatic aberrations, a critical factor for enhancing optical quality in digital photography, in order to achieve outstanding optical performance over the entire zoom range.

Enhanced Peripheral Illumination

Peripheral light fall-off is minimized when compared with that of conventional lenses for film cameras, so images are uniformly bright from the center to the periphery.

Internal Surface Coating to Reduce Ghosting and Flare

By employing "Internal Surface Coatings" (i.e., multiple-layer coatings on cemented surfaces of plural elements) and multiple-layer coating technology on ordinary elements, ghosting and flare due to the reflections that occur when light enters through the front element and reflections caused by the imagers themselves are reduced to the absolute minimum.

Zoom Lock Mechanism

The Zoom Lock prevents unwanted barrel extension when carrying the lens/camera combination.

• Tamron 17-50mm f/2.8 XR Di-II LD Aspherical [IF] Autofocus Lens for Canon EF
• 67mm Snap-On Lens Cap
• Rear Lens Cap for Nikon AF
• RHAF09 Lens Hood
• Limited 6-Year Warranty