The Cosinon 55mm f/2.1 Auto is a lens for cameras. It was assembled in Japan.
The 55mm focal length of the prime lens cannot be changed. It is a member of the normal lens group. The maximum aperture of the lens is given as f/2.2. f/16 is the smallest available aperture.
Focus on this model must be set manually. The minimum distance to the subject must be 60 cm.
The lens can be used with analog cameras with M42 thread. An inexpensive adapter also enables digital photography.
A 49mm filter lens, e.g. an ND filter, can be attached in front of the lens. The weight is given as 156 grams.
