via a DPR post here.
But do note that the photo below is NOT made with the DA 18-135, it is made with an A 50/1.7 and the picture has been edited. I believe the poster is simply mistaken there:-
Anyway, we see the difference. That's always what I say: Prime is Prime, and Zoom is Zoom! That is, not matter how "good" a zoom is, it is Just a Zoooom!