Voigtlander ULTRON 40mm F2 SLII Aspherical

Lens Construction :5 groups 6 elements
Smallest Aperture : F22
Picture Angle :57°
Aperture Blades : 9
Nearest Distance : 0.38m (with close up lens 0.25m)
Diameter x Length :φ63mm x 24.5mm
Weight :200 g
Mount : Ai-S / KA

closeup

Dome shape lens and
close up lens are included.

Source : Voigtlander