Maybe you messed up something that has to do with this:
Camera Modes
F1 - Useful for hunting and using your collected skills.
F2 - Normal mode/default mode.
F3 - Spy mode, perfect for taking screenshots. The camera moves separately from your character, so your character doesn't move.
F4 - Sees through the eyes of your character.
I am using + and - for changing the camera speed. Im not sure if it will work for you but you can always try it.
Also you can try these > , <
I heard from some people that you can change camera speed with those too, but Im not really sure about it, you can try.
Exactly what Fickle said. For more Controls click here (http://lastmoon.org/forum/tutorials/game-guide-(controls)-wip/)!