Just popped into my head... Those "control panels" on top of cameras like Canon 40D or Nikon D90 and so on... what do you need it for? As far as i can tell they share the same information as the main lcd screen on the back of the camera. I've never used a camera which has the top panel so i've never really missed one but there's got to be a reason for it. The only reason for one that i can think of is if you want to keep some special menu open on the main screen and therefore wouldn't be able to see the basic info while shooting. So those who use it, please let me know what they are for .