Actually I know the "stars" you are talking of, but I think that the word "stars" was the wrong wrok to use. I think what happens more often than not is local over-exposure from streetlights and the like. It is almost like flare, but isn't flare. I noticed that someone on shoots xp2+ and at night he doesn't get the effect. I was hoping to get something along those lines. I have tried Diafine and it was also "ok"; but not great.