The Tamron 28-200mm F2.8-5.6 is the first all-in-one-zoom to achieve a maximum aperture of F2.8 at the 28mm wide-angle end. The new lens takes the convenience of an all-in- one zoom and adds a fast-maximum aperture of F2.8 and remarkable image quality to enhance the potential for photographic applications. To assure superb optical performance, it features a precise arrangement of special lens elements that accommodate the increasingly high resolutions of today's Digital cameras. Enabling high-quality image rendering throughout the zoom range, the lens responds to users' photographic expressions in a powerful style. With its 4.6" length, 20.3 oz. weight, and filter diameter of a mere 67mm, the 28-200mm F2.8-5.6 offers excellent portability.