It's really obvious with the Automatic Grenade Launcher in Crysis Warhead. The AGL doesn't have an aim mode, so the view shouldn't change at all when you squeeze the left trigger. But if your reticle is near an enemy, the camera jerks in their direction.
I prefer the ergonomics of a gamepad and I don't want this crutch -- especially when it backfires and actually makes some shots more difficult. Is there a CVAR or something?