Carl Zeiss Jena Flektogon 20mm F4 lens (M42 mount). It is in good working order and makes excellent vintage character images.

The lens is in good condition. But there is a scratch of about 1 cm on the front lens, it does not affect the photo. The lenses are clean and take good photos. The lens is free of fungus and fogging. Focusing works smoothly. The aperture opens and closes well!

Includes front and back caps and tube.

Focal length: 20mm

Relative opening: F = 4

Aperture scale limits: 1:4 -1:22

Number of aperture blades: 6

Mount: M42. Come with both