As you come in closer to a black hole, how do you see the event horizon? Is it always like a clear-cut surface? Or it only looks clear-cut from a distance, but as you come closer to the black hole, you start seeing it's a blurry layer, and everything around you gets gradually darker as you fall through?
I know that the Schwarzschild radius would define an exact (clear-cut) sphere around the singularity (the surface of no return), but what actually happens to light itself? Anyway, my question might be lacking in imagination, since light gets bent badly already outside the event horizon.