Leica 50mm f/1.4 Summilux-M Aspherical Manual Focus Lens (11892) Construction - 5 Groups/8 Elements Aspherical surfaces - 1 Angle of view - 47 , 40 , 27 (diagonal, horizontal, vertical) F stop range - 1.4-16 Closest Focusing Distance - 2.3' (0.7m)