We join the aircraft around 700 feet above the ground. It is in full landing configuration. The aircraft calls "500" when the Radio Altimeter is 500 feet above the ground.
at 400 feet the pilot flying (normally the Captain) will call the changin mode on the main cockpit instrument (Primary Flight Display PFD) In this case he would call LAND because the aircraft is going to land itself with the Autopilot working. After this LAND call from the pilot flying, the pilot flying constantly switches between his instrumens and looking outside for any visual references of the runway and its lighting system.
Just after this happens we enter the clouds. Overcast at 300 feet above the airport and the reported visibility is 300 meters on the runway.
From here out in, the pilot monitoring (pilot not flying, in this case myself the First Officer) is monitoring the PFD and waiting for the landing stage of the Autoland function. I am waiting for the aircraft to arm FLARE mode on the PFD which tells us that the aircraft will slow the rate of descent and touchdown on the runway, on target and on the centreline. At around 100 feet above the runway we start to see the glare of the runway lighting system and become visual at around 50 feet above the runway. The Captain double checks to make sure everything looks safe & the First Officer calls out the changing modes of the autopilot as and when they happen.
We were set up for a CAT3b autoland which means we technically did not need to see anything on the runway to land.


Pilots eye view of what we see, when the airport is covered in thick fog.
We let the aircraft land itself and monitor the computers closely making sure it is doing what it is supposed to.

Filmed with a GoPro, suction cup mounted and not touched below 10000 feet, when we are busy flying the aircraft.