Leica M-mount lens. Listed under Sony α E-mount category for convenience. This is the third generation of the Leica Summicron 50mm f/2 standard lens. It's a later model, made in Germany, not Canada. It's said to have the same design as the current fourth generation with the built-in hood. This generation is considered to have the same image quality, with the added benefits of a user-friendly focus knob and the ability to attach a hood. As the saying goes, Leica begins and ends with the Summicron, and I've learned a lot from using this lens for over a decade. When used with a digital M-series camera, it's sharp even wide open. The sense of mass and realism are the true strengths of this lens's expression. It remains a top-tier lens for documentary photography, both now and in the past. Regarding condition, it was serviced at Doppietta Tokyo two years ago. In my personal opinion, there may be some minor dust and debris inside. I don't believe there is any haze. The focus knob is smooth, and there is no balsam separation. I haven't experienced any issues while shooting. Please refer to the uploaded photos. A 6-bit code is marked with a marker. If you wish, I can remove it with alcohol. Accessories: The lens hood is the 12585 from the second generation, as I don't prefer the third generation's hood. This combination of the third generation lens and the 12585 hood is considered the most stylish Leica lens combination. Includes genuine lens filter and mount cap. Owning all genuine accessories is satisfying. As the seller, I've used this lens with various generations of digital M-series cameras and the SL with a mount adapter, and it's truly a wonderful lens. I hope this lens will be passed on to someone new. No returns or exchanges, please.