Product Specifications High speed and an unmistakably aesthetic rendition of out-of-focus areas make this telephoto lens the first choice for every portrait photographer. The precision and almost silent action of its autofocus give photographers decisive extra moments to concentrate fully on the creative aspects of their work and the people in front of their camera. Field angle (diagonal, horizontal, vertical) 27.3° / 22.9° / 15.4° Optical design Number of lenses/groups 11/9 Number of aspherical lenses 1 Entrance pupil position 22.9 mm Distance setting Working range 0.6 m to infinity Smallest object field 120 x 180 mm Largest reproduction ratio 1:5 Aperture Setting/function Electronically controlled aperture, set using turn/push wheel on camera, including half values Aperture setting range 2-22 Lowest value 22 Bayonet/sensor format Leica L bayonet, full-frame 35mm format Filter mount E67 Dimensions and weight Length to bayonet mount 102 mm Largest diameter 73 mm Weight 700 g