The OpenGL Shaded Camera view displays a shaded rendering (with or without image maps) of the Camera View.
The OpenGL shaded Camera View defaults as on. You can quicky toggle between the shaded OpenGL Camera view and the Wireframe Camera view by pressing F11 or right clicking on the Camera window and choosing "Hide/Show OpenGL Camera View".
You can turn off the display of image maps by right clicking on the Camera window and choosing "Image Mapping Off". Shaded rendering is faster and uses less memory if image mapping if off.