I was just familiarizing myself with manual mode on my X-E1, trying to learn how to get the best exposure I can. I noticed that the LCD brightness doesn't change with exposure (not a big deal), and the histogram also doesn't change (a BIG deal). I can be effectively -2 EV, change shutter speed so that I'm +2 EV, and the histogram will not change. I'm a bit worried about this camera now. Do I really have to chimp the histogram after the fact? Are my expectations out of whack? Could I have my camera settings messed up?