Removing animation from view changes 1, 3, 7 etc.

How do I remove the slight animation Blender has when changing 3D views from front, back, top etc. when using the 1, 3, 7 keys, I’m sure its in user preferences but I cant find it. I am setting up background images and the change from front to back has a turning effect, blenders animation, that I need to reduce or disable.

Just set the Smooth View in the Interface Tab of the User Preferences to 0 to turn it off. Just lower the Value a bit to reduce the effect.
If you increase the rotation angle, transitions will happen faster.