Currently there are 15 native SuperZoom lenses for Pentax KF and all of these lenses are autofocus (AF) type.
KF also has a sensor based image stabilization system which means that all of these lenses will be stabilized when used on KF.
Since Pentax KF has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 1 SuperZoom lenses with Weather Sealings.