Is there any way to change the default camera angle in Batman Arkhum Asylum?
Unfortunately, you cannot manually change the standard camera angle in Batman Arkham Asylum.
Maybe that's the only flaw in the game. There are automatic camera adjustments during gameplay, and you can control the camera view with the right thumbstick.
Not permanently. You can move the camera using the right-stick on the PS3 (which I assume is the same on the XBox 360), but once you release, the camera goes back to its default angle.