I'm taking a b&w film photography class right now, and I'm using my friend's Nikon N75. Film's new to me, but I have experience with my digital D80. So I know my way around cameras, particularly Nikons. So I'm sitting in class bored, assuming I know more than almost all the other students in there who are saying things like "what's aperture?" when something the teacher says catches my attention. She said the light meters are flipped in Canons and Nikons. Canon like so: -2 . 1 .  . 1 . 2+ Nikon like so: +2 . 1 .  . 1 . 2- Now I've never used a Canon DSLR before, but I had always assumed their light meters were no different than Nikons. I've always wondered why Nikon meters were "backwards" based on our natural reading habits of going from left to right. I still don't know the answer to that, but since we're shooting in M for this class, I'm paying a LOT more attention to that stupid little backwards light meter than I used to (I usually shot in S or A). Fast forward to after class when I'm driving home... Now we all know speedometers are "normal" in that they increase from left to right. Say: 30....|....40....|....50....|....60 Well I'm driving along, *THINKING* I'm driving 55mph, but the needle is actually on the 45mph mark lol. Apparently staring at Nikon's dumb light meter for a few hours got my brain working from right to left, so I was thinking I need to put the needle to the left of 50 to do 55. Cliffs: 1. I used a Nikon camera 2. I lost the ability to drive normally 3. ? 4.