The KIWIFOTOS LMA-L(R)_EM lens mount adapter is fine finishing, made of black anodized aluminium (camera body mount) and brass silver (lens mount). The adapter allows Leica R mount lens to be used on any Sony E-Mount camera body (Sony NEX3/NEX5 etc.) Infinite focus is guarantee. Since there is no electronic communication between the Leica R Screw mount lens and the Sony E-mount camera body, auto focus will not be available. Use the lens in the fully manual exposure mode (M), or in the aperture priority (A) mode and select MF assist function to focus accurately (7x or 14x zoom focus). 

Note: 99% or more of all Leica mount R lenses are probably compatible with the adapter and camera.