Man I know how to take DOF screenshots, but they are always blurry and full of stuff. How to make them like HD and stuff? 
If you don't want the thing you want visible to be blurry, focus the middle of the screen on that object, for example, you want your player visible and everything else blurred, position the screen so that the player is in the middle, then take your DOF screenshot and wait while the game processes it, then see how it came out
Remember though, if the camera is too close to the object you're trying to focus on, something like this may happen
Or this
