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