particle systems? If you ask if particels get blurred too, then yes. Everything on screen gets blurred. Doesn´t matter what it is. The only thing which don´t gets blurred are other views.

This effect works only with pro (render to texture). The blur is stepless adjustable. The depth of field has some disadvantages, like a small earthquake effect and always motion blur on. But as I said I didn´t ballanced anything in the demo. I just used my default settings because I am busy.