The Revuenon 50mm f/1.9 Auto is a lens from the manufacturer Revue. Depending on the version, it can be used on cameras with M42 thread or Pentax K mount.
The manufacturer specifies a focal length of 50 mm. This places it in the group of standard lenses. The largest selectable aperture is f/1.9. When closed, the aperture is at f/16.
The focus of the lens must be set manually before each shot. The minimum distance to the subject must be 50 cm.
Filters with a diameter of 49 can be used with the lens. The lens weighs 143 grams.
