"Nice comparison! I think Sigma sharpens up considerably once you step away a bit.....
I am not saying anything new, but it surprises me people see these two lenses as rivals."
Thanks, Yes I know I am not noticing anything new that many others haven't detailed previously and more thoroughly on this thread. I don't necessarily see them as rivals, I've had the Batis for a year and half and love the results it produces, I just dislike the bulk/footprint of it - wish it was lighter...In the last 6 months I've increasingly found myself carrying only my a7r3 and my sony ziess 35 2.8 as a single walk around lens - I use one of those hand straps from spider, and am able to shoot one handed using the back screen to compose instead of holding the camera up to my eye and using the viewfinder. It's kind of like what I imagine William Eggleston was talking about when he compared shooting a rifle from waist level compared to the regular shoulder/sighting down the barrel way. It's much harder to get a sharp picture one handing w the Batis in this way.
I guess I was hoping the Sigma would give me the benefits of the Batis, (solid build quality, across the frame resolution stopped down, more 'normal' FL -so many of my shots with the Zony 35 I wish I was able to be 5 feet closer and end up cropping the foreground)
After a week and a few more sessions, it's still a tough call. But the Batis is the one I'm leaning on parting with out of the 3, even though I know there's bound to be certain situations where I'll miss it's delivery of the goods.
this and this both with the Sigma, are more representative of the types of pictures I take normally.