More pictures of the 500mm f7 Komura lens which screws into the Komura Focus Unit II. The Focus Unit II has 3 aperture scales for 500mm, 400mm, and 300mm Komura lens. $300 or OBO shipped to you in the USA with payment via paypal or other approved method. Outside USA, you pay shipping/insurance etc.
If you are looking for a 400mm f6.3 Komura lens, I will be posting it for sale later this week.
Also note that the 2x teleconverter will work with the Focus Unit II so you can double the focal length to 1000mm
for a medium format Bronica S system.