Voigtländer Collinear III 15cm アナログカメラ

Collinear III 15cm lens mounted on a lensboard, in good physical condition and tested and working, with a focal length of about 50 mm, maximum aperture f/5, Collinear (symmetric) optical scheme, produced in the late 19th to early 20th century, predominantly brass with a black or browned finish, generally focused via the camera bellows, with visible dust as shown.