RainbowImaging Leica M39 LSM lens to Leica M Mount Adapter, for 50mm -75mm lens, (RainbowImaging Adapter) This lens adapter allows (50mm -75mm) Leica SM / M39 lens to fit onto all Leica M mount cameras. Brand new, made of brass copper Infinity focus is allowed. Fits LSM M39 lens (50mm -75mm) & Leica M cameras