Currently there are 14 native Macro Prime lenses for Sony FX5 and 7 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 6 Macro Prime lenses with Weather Sealings.