Fine finish black anodized aluminum metal design with a brass silver ring the KIWIFOTOS LMA-NK(G)_PQ lens mount adapter allows Nikon G lens to fit on any PENTAX Q mount camera body. The lens fits physically but automatic diaphragm, auto focusing, or any other functions can not operate correctly. Use the lens in the fully manual exposure mode (M) or AV mode in auto exposure. The adapter is also equipped with a "ON/OFF" aperture control ring for user to set the designed aperture. Focus can be infinity.