1. A system comprising: a first array of cameras, each of which has a first focal length and is disposed to image a respective portion of a wide area scene, the first array of cameras providing a first spatially continuous view of the wide area scene; and a second array of cameras operably coupled to the first array of cameras, each of which has a second focal length different from the first focal length and is disposed to image a respective portion of the wide area scene, the second array of cameras providing a second spatially continuous view of the wide area scene, wherein at least a portion of the first spatially continuous view of the wide area scene overlaps with the second spatially continuous view of the wide area scene.