Kowa 65mm f/0.75

Company Kowa
Country Japan
Year of manufacture 1970s
Type X-ray ultra fast
Focal length 65mm
Aperture f/0.75

Note: The images here are taken with a modified back lens group. The back lens group is the back lens group of an Astro-Kino-Color IV 85mm f/1.6. I’m not sure what the new f-stop is.