I wasn't expecting the quilted jacket look…
I'm joking of course. The problem with set photos is that you're not seeing the finished product and you're not getting the context. It's a safe bet that elements of Ultron are CGI'd and it's like that this was not intended to be a full body shot.
Still just looking at the head and upper torso I like the design they've gone with here.
For comparison purposes I've included a fairly traditional image of Ultron for the comics. As you can see they've stayed broadly faithful to the design without feeling obliged to slavishly copy it. Which works for me.