Meet the Arecont Vision MicroDome Duo: a dual-dome camera that lets you view two directions at once. Its sensors have independent remote focus modules, mounted on 3-axis gimbals. MicroDome Duo can be mounted on a wall or ceiling. It is available in 4, 6, or 10-megapixel resolution models.
MicroDome Duo also has dual, day/night mechanical IR cut filters. It requires a single PoE IP connection to work. You can find various MicroDome camera models here.