Currently there are 63 native Telephoto Prime lenses for Sony FX30 and 49 of these lenses are autofocus (AF) type.
FX30 also has a sensor based image stabilization system which means that all of these lenses will be stabilized when used on FX30.
Since Sony FX30 has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 33 Telephoto Prime lenses with Weather Sealings.