Currently there are 35 native Wideangle Prime lenses for Sigma fp and 27 of these lenses are autofocus (AF) type.
Sigma fp doesn't have a sensor based image stabilization system and none of these lenses have optical Image Stabilization.
Since Sigma fp has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 20 Wideangle Prime lenses with Weather Sealings.