Currently there are 19 native Standard Prime lenses for Canon 1Ds MIII and 10 of these lenses are autofocus (AF) type.
Canon 1Ds MIII doesn't have a sensor based image stabilization system but 1 of these Standard Prime lenses features optical image stabilization.
Since Canon 1Ds MIII has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 4 Standard Prime lenses with Weather Sealings.