One-of-a-kind, so it's first come, first served. Schneider Kreuznach 50mm single-focus lens, silver finish. This lens is not yet available in Japan. I purchased it at a Focus Camera event, but I own an Apo-Summicron and didn't feel a difference in the image quality, so I'm selling it. The resolution is amazing, just like the Apo-Componon. If you're interested, please purchase it. Leica M mount. Equivalent resolution to apo componon 45mm F4 Schneider Xenon Emerald - Brand: Schneider - Model name: xenon emerald 50mm F2.2 - Color: Silver - Type: Single-focus lens - Focal length: 50mm Thank you for viewing. Focal length...19-70mm Open F value...2.1-2.8