Focal Length : 50mm
Maximum Aperture : 1.8
Minimum Aperture : 22
Lens Construction : 6 elements in 5 groups
Diagonal Angle of View : 46o
Focus Adjustment : Overall linear extension system with Micromotor
Closest Focusing Distance : 0.35 m / 14 in
Filter Size : 49mm
Dimensions ( D x L) : 68.6 mm x 40.6 mm (2.7 x 1.6 in)
Weight : 162 g (5.7 oz)