For some unknown reason, blender decided to put an enormous space between the edge of the viewport and the render area of the camera (see image). How do I get rid of this? I increased the resolution of the render and the scaling, but it seems to do nothing at all. I also changed the focal length of the camera and tried to zoom in and out. Nothing.
Also, this appears to be the default way the camera is set up on every blender scene. How can I change the defaults too ?