Foggy/Reduced screen lighting after getting out of the black book in Undeath

[Farbgast]

It probably was a result of using too much candlelight in such a dark/blurry place for a significant amount of time. Now there is lack of brightness even on a clear day. I tried adjusting the display options, zooming in with a bow, but the graphics still look quite hazy.

 

This was before entering the black book.

This was after entering the black book.

 

I saved to pretty much the moment before entering it, but due to the significant time with the blurriness and all that when being in the book, I think it caused my lighting to act like this permanent. Is there a way to fix this?