Ah but couldn't you theoretically have "all light" in an area? Just fill every crevice (easier on a smooth surface), including in front of and behind objects, like a flash bang or something. You could even more easily have "all dark" with no light whatsoever.
Since visible light is just photos, and darkness the absence of these.
Anyway, it would be under perfect conditions but I think it would be possible, at least in my imagination.