I use the Shift + F method to move my camera when I'm modeling(which makes my background image/reference vanish) but lately I watched this person who could move the camera without the BG image vanishing: https://www.youtube.com/watch?v=iI3zaenro-M
This would be incredibly helpful but I simply don't know how to do that and my google searches have turned up nothing, so I really need some help from the community on this :)