Helios 44 58mm f/2

Weight: 230 g
Brand: Zenith
Description: Mount: M42x1 thread, lens type: standard, focal length: fixed, fixed lens focal length: 58 mm, aperture F at min. focal length: 2, Aperture F at max. focal length: 2
Type: Lens
Length: 57 mm
Focal length: Permanent
Lens type: Standard
Minimum focus distance: 0.5 m
Focal length of prime lens: 58 mm
Bayonet: Thread M42x1
Filter thread diameter: 49 mm
Aperture F at max. focal length: 2
Aperture F at min. focal length: 2
Minimum aperture F: 16
Number of aperture blades: 8
Number of element groups: 4
Number of elements: 6