Currently there are 20 native Standard Zoom lenses for Sony A7S and 19 of these lenses are autofocus (AF) type.
Sony A7S doesn't have a sensor based image stabilization system but 4 of these Standard Zoom lenses features optical image stabilization.
Since Sony A7S has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 13 Standard Zoom lenses with Weather Sealings.