VILTROX NF-Z Mount Adapter Viltrox Camera Side: Z Mount Lens Side: F Mount Some third-party lenses that don't work with the original mount adapter will work. I was using it with a Tokina 70-200F4 lens. The firmware is the latest version, 1.3. It was working without any problems until recently. The exterior has no noticeable scratches and I think it's in good condition. There is no original box or instruction manual. #FTZ