Urth Lens Mount Adapter: Compatible with Leica M lenses to Canon R camera bodies This is a high-quality, simply designed mount adapter from URTH. I purchased it but am selling it because I haven't used it since trying it out at home. There are some minor scratches, but it's relatively clean and there are no problems with its use. Personally, I think it has the best design, along with its precision, among the many mount adapter manufacturers. It is currently sold on Amazon for around 12,000 yen. Mount Adapter URTH Leica M Canon RF kipon shoten