Black anodized aluminum metal design with a brass silver ring the KIWIFOTOS LMA-PK(A)_FX mount adapter allows the use of Pentax K-Mount lens to fit onto FUJIFILM X-Pro 1 interchangeable lens camera. This unique adapter is equipped with a "ON/OFF" aperture control ring for user to set the designed aperture. It is manual and does not provide auto-focusing and auto-diaphragm therefore, use the lens in the fully manual exposure mode (M), or in the aperture priority (A) mode. Preserve all focusing range up to the infinity point.