Thank you for viewing. Although there was no option, I've listed it as K-mount, but it's actually P645 mount. I was using it with a FUJIFILM GFX, but I'm selling it because I'm replacing the lens. There is some minor dust, but both the exterior and the lens are relatively clean. (Included items) Front and rear caps. A Kenko Protetor Filter Zéta Quint is also included. Please note that this is a used item, so we do not accept claims or returns after purchase. #PENTAX #PENTAX645 #P645 #OldLens #MediumFormatCamera #MediumFormatLens #GFX