1. An imaging device comprising: a primary camera to capture an image of a scene, the primary camera having a frame synchronization signal line; a secondary camera to capture an image of the same scene and coupled to the frame synchronization signal line to capture images synchronized with the primary camera; a third camera to capture an image of a second scene without synchronization with the primary camera; a processor having a plurality of camera ports, the ports including a first port coupled only to the primary camera to receive images from the primary camera and a second port configured to be coupled to another camera to receive images from the other camera; and a multiplexer coupled only to the second port of the processor on an output side and coupled to the secondary camera and to the third camera on an input side to receive captured images of the secondary camera and the third camera and to alternately couple either the secondary camera to the second port of the processor for synchronized capture of the same scene or the third camera to the second port of the processor for capture of the second scene.