2x telephoto magnification

Superb optical performance, including both outstanding image quality and beautiful background Blur effects (bokeh), provided by fast f/2.8 aperture. Comfortably light weight (19.4 oz.) and compact (4.6 in). Maximum Magnification Ratio: 1:2.9 (Wide); 1:4 (Tele) Close-focusing; minimum object distance: 7.5 in at wide-angle setting and 15.3 in at the telephoto position. All-new “rxd” stepping motor AF unit is extremely quiet and therefore perfect for video capture. Moisture-resistant construction and fluorine coating for weather protection..Maximum Diameter:Φ73mm