thats a great example of using corridor view.. good easy fix.. you can see quite a bit deeper into the darkness.
Now an external illuminator pointed 30-50 ft away would even the lighting and improve facial detail up close. It helps illuminate the far reaches and evens the lighting so that well lit closeup face shots (the money shots) aren't washed out from too much light. You'll be able to speed up your nightime max exposure speed a bit as well to help eliminate blur.