Fotasy PK-FX Pentax K Mount (PK) SLR Lens Lens Mount Adapter, Compatible with Fujifilm X-Series Mirrorless Cameras Solid metal mount lens adapter allows Pentax PK lens to be used on Fujifilm Fuji FX camera body Designed for Pentax PK lens and Fujifilm X-Pro1 X-E1 X-M1 Camera Pls note the focus and aperture of the lens has to be used manually. Brand: FOTASY