Product Information This high magnification zoom lens covers focal lengths from 28mm wide angle to 200mm telephoto, with closeup capability. It incorporates special internal focusing to enable it to focus as close as 19.7 inches (50cm) from film plane to subject, at all focal lengths (an optional accessory 72mm close-up lens allows even closer focusing and greater reproduction ratios), and to simplify the use of polarizing filters. A detachable 'perfect hood' is provided. The optical materials used in this new lens are lead and arsenic free ecological glass. Features • Special Low Dispersion (SLD) and Aspherical Glass. • Internal focus (non-rotating front).