You can get Motion blur even in DX6.0.Did you ever played Tomb raider series? remember Tomb Raider last revelation when you got bitten by a scorpion or a snake a motion blur effect was on screen so that you felt dizzy or sick? Motion Blur is and old fashion thing, believe or not. FX like Depth of field or Bloom need DX80 and HDR(High Dynamic Range) lighting FX need DX9.0. But that's not the point here, what Yenicery wanna know is actually how to add motion blur effect to the game. Well, I just don't know.. but I can tell you that an image motion blur is the one you need to give this feeling at low altitudes. Lock On uses a DX80 engine so, theorically, motion Blur, depth of field and Bloom FX could be added but tecnically, it depends how airtight or closed the code is.