Enormously versatile zoom lens offering focal lengths from medium long to a full 3X telephoto Focuses down to a close 3.3ft at all focal lengths; a magnification ration of 1:5 is possible at the 150mm focal length Well-corrected aberrations as well as Nikon Integrated Coating provide high contrast at every focal length from wide open to completely stopped down Single focusing/zoom ring assures superbly responsive operation - once in focus, always in focus