Currently there are 21 native Standard Prime lenses for Sony A7R and 17 of these lenses are autofocus (AF) type.
Sony A7R doesn't have a sensor based image stabilization system and none of these lenses have optical Image Stabilization.
Since Sony A7R has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 13 Standard Prime lenses with Weather Sealings.