The elements configuration is symmetry type and focus is 0.5 meters, minimum aperture is f22. The angle of the field is over 92 degrees. There are 19 steps scale distance on the circumferences.
It takes a very good photo for the first product which has been made forty years ago. It sees that the lens continue manufacturing even now. The cost of bland new is around 35,000 yen in Tokyo. The view finder of this lens is about 18,000 yen and has an unique parallax compensation.
This like a Pan Cake lens attached to the old Leica looks very good in design. By KBNR