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.
Now just picture that robotic visage speaking with James Spader's voice. Yup we have a winner.