Unprecedented blend of optical performance and versatility New, innovative all-in-one lens that does it all All of Tamron's technical know-how regarding all-in-one zoom lenses has been distilled to create this 28-200mm F/2.8-5.6 Di III RXD (Model A071). The lens has a large maximum aperture of F2.8 at 28mm, a world's first* for all-in-one zoom lenses, and delivers high-level performance from 28mm wide-angle to 200mm telephoto. Although covering a wide range of focal lengths, the lens is lightweight and compact. Tamron has taken an uncompromising approach to optical performance, making liberal use of special lens elements—including LD (Low Dispersion) and XLD (eXtra Low Dispersion) lens elements—to greatly suppress chromatic aberrations, making it possible to achieve high image quality from edge to edge. This innovative all-in-one zoom lens vividly captures virtually all possible scenes, from landscape photography to portrait photos and snapshots.