Render limited region

Hi Blenderers.
I have a problem with render limited region:
I know that Shift B, determines the region to be rendered. I also know that to un-select the region you go into camera view and select an area outside of the camera view (the dark area).
But this is different, the selected area appears on every view, but not in camera view even if I move the camera around or delete the original camera and create a new one.

Does any one know how to get rid of this limited area, outside the camera view?

Thanks in advance for your kind reply.:eyebrowlift2:


It is Ctrl+B to determine the render border, and Ctrl+Alt+B to remove it.