VALVe are developing a number of clever techniques to make this possible, all of which are covered in the article. While HDR replicated the human eye’s response to light, VALVe’s new “Depth of Field” effect replicates a camera’s perception of focus. That means if you’re looking at a soldier next to you, your comrade will be crisp and clear but the distance will be out of focus and blurred, just like a camera. Motion blur can be implemented on top of this, to give the sense of rapid movement. Finally, colour can be tweaked and a grainy effect can be added to give that authentic, aged feel. And there we have it, DoD:S like you’ve never seen it before... straight from a reel of ancient film.