After reading a topic on this forum about secret areas, I felt compelled to explore
So, I switched Penumbra on, and loaded up the Storage Room.
I started playing, but I noticed something weird on the screen, it looked like a superimposed zoomed image of what I was seeing now, like this:
Then, when I examined anything, the effect seemed to "fade in" and fade out again when I walked away, but then after fiddling more with settings, I found the only thing that turned the effect off was bloom.
Any ideas?
I've added the hpl log, just incase you need it.
(BTW, the HPL log is in the Incinerator, I was playing around with settings there)
Hope that helps