Strange camera view

I dropped a book over the keyboard while using Blender and now I’m getting this strange sight in camera view:

That never happened before, therefore I don’t know how to solve it :<

Say hello to the camera :smiley:

Make sure you don’t have 2 cameras. If you do, it probably switched views, and all you need to do is press ctrl+0 (zero) to get it back. If thats not the case, I don’t know what is.

So easy… thanks