DOF is depth of field, its a camera/viewing affect, that can be applied in 3d programs, movies, cameras and now video games. Like a focus point with the outer edges of the camera blurry, it is prob doing real time motion blur or is using the math equation to generate that affect thus giving you the mega slow downs.

Chaos_21

The graphics look outstanding, but the game control looks kind of lacking

If you mean the bit of choppyness or being hard to control that is because its only using one of his gpus atm have to wait for ati to release new drivers so crossfire will work with metro.

Maybe it was just the specific areas I was in but it seems to only be using a single core on the cpu?

Seems a little odd since they recommended a dual/quad core cpu for it.

Well Craptacularone played it with his crossfire setup and said his second gpu was not being used I think he will be trying a third card for trifire but he said this will not be fixed untill ati releases new drivers. There is a notacble difference in dx10 to 11 in eye candy you just have to know what your looking for. In a screen shot you cannot tell if things are using tesselation or not btw that is a more on the fly you get it as the framerates are going by with how they are using it in the game. TBH I cannot wait to see the 480 GTX because that means I can finally make a choice if im going red or staying green on my upgrade.

Because of all the new eye candy the computer needs the work table aka ram to work with, when dealing with more intense models, special affects aka eye candy in game it chews up alot of resources.