LENS CONFIGURATION 11 elements in 9 groups
FOCAL LENGTH (35MM FORMAT EQUIVALENT) 46mm
ANGLE OF VIEW 50.7°
MAX APERTURE F2.8
MIN APERTURE F22
APERTURE CONTROL Number of blades: 9 (rounded diaphragm opening). Step size: 1/3EV (23 steps)
FOCUS RANGE 0.1m-∞ (measured from focal plane) 
MAX MAGNIFICATION 1x 
EXTERNAL DIMENSIONS (DxL)  60x69.5mm
WEIGHT 195g
FILTER SIZE 43mm