The Tamron Super II Macro for Nikon is a useful addition to any photographer�s set of tools. The focal length of this Tamron aspherical lens is 28 mm to 200 mm with a wide angle of view. The minimum focus distance is 19.3 inches and the maximum magnification ratio of the 28-200 mm f/3.8-5.6 is 1:4. The Tamron Super II Macro for Nikon achieves the minimum focusing distance of 19.3 inches as a result of its internal focusing system, which also delivers the capability for wide angles of view at large distances. The Tamron Super II Macro for Nikon is equipped with zoom lock switch mechanisms which prevent the lens barrel from extending downward when the camera is hung from the neck. A bayonet-type lens hood is included with this Tamron aspherical lens for Nikon, and is a useful accessory that serves to reduce excessive light that could detract from the quality of the photo. When used with the appropriate camera, the 28-200 mm f/3.8-5.6 can indicate the depth of field on the viewfinder screen of the camera.