Upload & Sell: Off
I got my 16-35 f/4 IS yesterday, and even on 5Dii it looks better @f/8 than @f/11. Also, I'm not getting the kind of CA I see in that sample. No purple anywhere, and I shot a lot up into the tree branches on a cloudy bright day looking for it, too. It's almost spooky.
The corners seem to be picky about where you focus it.
Sorry for the non Alt post, but I think for comparative discussion it is allowed. To me, Canon lenses on a 5D feel Alt