There are some spots where the game gets really dark for no reason. It's annoying, you end up not being able to see the enemy. I'll post here two spots where this happens (I'm playing in the lowest settings, not sure if this is relevant, though)
This one in Precinct:
This one in Crossing: (The Firefight version with the bus gets darker, but I was playing offline for the example)
In both cases I'm in a corner.