p.4 #1Sigma 24-35 F2/ Sigma 35 1.4 Plus many comparison lens tests
Okay here is where if you make a mistake on focusing you pay dearly in the result. Not really a mistake on my part but I focused squarely on the corner of the building which I was trying to see that detail but given this is a wide image I should have focused more on the Bull rider to handle the DOF i did not but this is a classic case of wanting good corners because as you will see the Sigma 1.4 lens did not handle it well the Zoom having better corners did better but neither is perfect because i did not focus for the whole scene.
As you can see with the focus on dead center of the building even at 5.6 the Sigma Prime could not even come close to handling it because the corners do not get good till your really stopped down where as the Zoom with much better corner resolution handled the mistake in focus much better. If I did focus where I was supposed to like at the Bull Rider the Zoom would have nailed it at F.56 and maybe sooner but the Sigma prime my bet at F8. So even a small focus mistake can be deadly. Now this was not a mistake on my part per say because i was looking at the corner but hopefully you understand what I am saying. Pretty interesting
p.4 #7Sigma 24-35 F2/ Sigma 35 1.4 Plus many comparison lens tests
Thanks a lot for your tireless and great work, Guy.
In the quest for the perfect solution, I would also point to the Sony RX1R II to cover your 35mm f/2 use and then enjoy the Loxia 21 mm and Sony 85 GM on the A7rII.
Oh, that was probably my dream combo I just put together there. Don't have the money for it.... yet....
p.4 #10Sigma 24-35 F2/ Sigma 35 1.4 Plus many comparison lens tests
Thought I would update this as I did sell all the Sigma lenses when I found out the adapter got pushed out and I had a chance to get the GM 24-70 sooner than I thought. Anyway I'm glad I did as I really love the GM and it does render better, has better falloff and just looks smoother overall. It does manual focus very nicely for a fly by wire and more importantly it's better at 24mm to 35mm in the corners and on center to the Sigma zoom which is no slouch by any means. I also don't have to deal with adapters . I did also add the Rx1r II to my kit and I'm seriously in love with this cam, it's my stand alone 35 no question. But this is a expensive path and not everyone want to go down this road with the GM which I totally understand. Good news you know it's available if you want it