Currently there are 27 native Standard Prime lenses for Panasonic S1 IIE and 25 of these lenses are autofocus (AF) type.
S1 IIE also has a sensor based image stabilization system which means that all of these lenses will be stabilized when used on S1 IIE.
Since Panasonic S1 IIE has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 16 Standard Prime lenses with Weather Sealings.