The Tamron 28-200mm F2.8-5.6 is the worlds 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 todays digital cameras. Enabling high quality image rendering throughout the zoom range, the lens responds to users? photographic expressions in 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. When combined with a compact, lightweight full-frame mirrorless camera, it allows photographers to capture virtually every scene they encounter in daily use, travel, sports and nature. Breaking conventional limitations and broadening the horizons of photographic possibilities, this zoom lens writes a new chapter in the history of the all-in-one zoom lens.