presspass
filmshooter
My ZM Sonnar 1.5 mounts just fine on two M6s - both Wetzlar models - but will not mount on a later Solms M6. The lens goes into the camera bayonet, but will not turn far enough to latch - it feels like it has hit something solid that keeps it from turning. Other lenses, including ZM and CV, seem to mount just fine on this camera. What should I be looking for?