Lens Structure : 7 elements in 5 groups (2 Aspherical lenses)
Focal Length : f=20mm (35mm camera equivalent 40mm)
Aperture : F1.7, Minimum Aperture F16
Aperture Type : 7 diaphragm blades / Circular aperture diaphragm
Diagonal Angle of View : 57o
Closest Focusing Distance : 0.2m
Maximum magnification : Approx. 0.13x / 0.25x (35mm camera equivalent)
Filter Size : 46mm
Overall Length (Approx.) : 25.5mm
Weight (Approx.) : 100g