Tamron 28-200mm F/2.8-5.6 Di III RXD Model A071The Tamron 28 200mm F 2. 8 5. 6 Di III RXD (Model A071) is a game changing lens for interchangeable lens cameras, featuring a world first bright maximum aperture of F2. 8 at 28mm. With its high level performance throughout the entire zoom range, this compact and lightweight lens (measuring just 4. 6 inches and weighing 20. 3 oz) is ideal for capturing virtually any scene, from landscape photography to portrait shots and close ups. With a minimum