Problem with the lens 9-18 Oly

Try to experiment with it.  You’ve seen the pictures – try to repeat them.  I think my lens is not much different from yours.  I’ve got great shots traveling in European narrow streets.  And no purple fringing at all. Nothing. Only when I want them I get them. I know all limitations of this wide angle lens.  That is actually a main reason why I did not buy Pany 7-14 using which is much easing to get purple colors.  I would have to concentrate on every shot I take to avoid that effect.