Quote - Quote:
*"For a realistic still, you can't do that.
*That's one of the secrets of game engines: they are primarily designed to make scenes with motion and moving objects look good. But in those games, no matter how realistic, if you stop moving and simply look around in a still scene, the fakeness is immediately apparent."

Not in Unreal it isn't, it's perfectly viable for pulling off a photo or competing with a raytraced image.
Feeze this video at 0:50 and drool if you'd like to see proof of how nice it looks when still.

Freeze it a few seconds later. Glowing particles that don't cast light (or reflect) where they should.