Radial blur isn't the same as DoF. This has been in every Beth game since Skyrim and controls screen effects like hit effects and part of the underwater effects. bScreenSpaceBokeh is the rapid flickering focus DoF effect for close up objects and its f*#@ing obnoxious and idk how Bethesda playtested with it and didn't find it completely awful. bDoDepthOfField is the distant DoF that doesn't really impact gameplay because it really just blurs distant terrain and objects. I think that one's more a matter of taste because it didn't really disrupt gameplay for me, I just found it kind of ugly.