Currently there are 25 native Telephoto Zoom lenses for Sony FX5 and 24 of these lenses are autofocus (AF) type.
FX5 also has a sensor based image stabilization system which means that all of these lenses will be stabilized when used on FX5.
Since Sony FX5 has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 24 Telephoto Zoom lenses with Weather Sealings.