If you havent read the article read it here and also download the movies - BitTorrent.

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These new features in the source engine go hand in hand with HDR, it gives the game (Day of Defeat Source atm) a more cinematic/realisitic feel. The features added are Depth of Field, Motion Blur, Film Grain and Color correction.

These new effects are amazing, it really brings an element of what you see into games. im not sure if these will ever be realsed in DODS let alone CSS as this might just be a bit of promotion upon Valves part.

But it does start giving the idea of being immersed into the game, as games atm have only one focus point, the whole screen.