John Shriver
Well-known
Excuse me, but everyone had to worry about Leica's patents until 1945. Then ALL German patents were cancelled as a war reparition. The rangefinder-coupled LTM mount was patent protected, even in Japan. Zeiss only started making LTM lenses during WW-II at the direction of the German government. Canon didn't make any LTM rangefinder cameras or lenses until 1946. (There were some without rangefinders.) The lenses Nikon made for Canon were in the Hansa Canon mount, not LTM.
Not to knock Nippon Kogaku's optical prowness, but they couldn't ship any LTM lenses until the patent were voided.
Same thing with the Contax mount, it was patent protected. The entire Contax I and II design all had to be designed around Leitz's patents. That's why the odd lens mount, and the very complicated shutter.
Not to knock Nippon Kogaku's optical prowness, but they couldn't ship any LTM lenses until the patent were voided.
Same thing with the Contax mount, it was patent protected. The entire Contax I and II design all had to be designed around Leitz's patents. That's why the odd lens mount, and the very complicated shutter.