Voigtlaender 21mm f/1.8 Ultron Leica M

Weight: 412 g
Brand: Voigtlaender
Description: Mount: Leica M, lens type: wide-angle, focal length: fixed, prime lens focal length: 21 mm, aperture F at min. focal length: 1.80, Aperture F at max. focal length: 1.80
Type: Lens
Length: 92 mm
Diameter: 69 mm
Focal length: Permanent
Lens type: Wide angle
Minimum focus distance: 0.7 m
Focal length of prime lens: 21 mm
Bayonet: Leica M
Filter thread diameter: 58 mm
Aperture F at max. focal length: 1.8
Aperture F at min. focal length: 1.8
Minimum aperture F: 22
Number of aperture blades: 10
Number of aspherical elements: 1
Number of element groups: 11
Number of elements: 13