Actually, the F-35 has normal-light and IR cameras facing left, right, rear, up, down, and front... to provide a continuous "full-globe" view.
And the pilot won't have to look at a display, the helmet-mounted display will (once a couple more bugs are worked out) show him/her/it whatever is in the direction he/she/it looks... if he looks down towards the cockpit floor he will see what's under the aircraft, etc.
He can see what's behind the aircraft by switching the display in the helmet or by looking at the display on the panel, it's his choice.
It will he as if the aircraft is fully transparent (depending on the display settings).