This is a Summicron 35mm, one of the most beloved lenses in the Leica R series, which is considered the pinnacle of old lenses used in digital cinema. Based on the serial number, it's a German-made lens from the peak of the R mount era in the 1980s. Originally an R mount, it has been converted to a Nikon F mount, and then further adapted with a Canon EF mount adapter. It has been used in various representative digital cinema cameras and hybrid cameras. It has primarily been used with various RED cameras, and occasionally with Arri, Sony, and Blackmagic cameras. It can be used directly or with various adapters to fit most cameras. It was useful for leveraging image quality and unique characteristics without the budget to rent top-level PL lenses from equipment rental houses for tens of thousands of yen per day. It can be used directly or with various adapters to fit most cameras. The front diameter is 77mm, and it has a focus gear from Duclos, allowing for smooth follow focus operation. The condition is as shown in the photos. The appearance is somewhat rough... There is some dust and debris inside. There are also what appear to be wiping marks on the front and rear elements, but there is no mold, and the image quality is not affected. I think it's in quite good condition. The focus helicoid and the aperture are both smooth. It works well as is. It can be further upgraded with products from Simmod, etc. Or, you could spend nearly 1 million yen to rehouse it with ZeroOptik, TLS, or GL Optics. As this is a used item, no claims or returns are accepted for any reason. #leica #cinema #arri #sony #red #smalhd #zeiss #vintaelens #oldlens - Focal Length: 35mm - Maximum Aperture: f/2.0 - Filter Diameter: 77mm - Country of Manufacture: Germany - Accessories: Lens cap Other features... Old lens, front lens cap included, rear lens cap included