The pentax hd da af 14x aw rear converter extends the focal length of the attached pentax lens by 14x while maintaining autofocus functionality providing the lens has a maximum aperture of f40 or brighter and minimum focusing distance the rear converter is made with a weather resistant dustproof construction for all weather shooting and mounts between the camera body and main lens the converter is compatible with the pentax k 3 k 50 k 500 k 30 k 5 ii k 5 ii s k 5 k 01 k 7 and