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If MR is correct, and LL's first take earlier today was more positive , Then A7R is already better than NEX7. Because it is clean with 35s, whereas no 24 RF was clean on the NEX 7.
I'm not sure I'd totally buy all 35s being clean on the A7R. I heard the same thing about the NEX-5N, only to find color shift with both the Zm 35/2 and Zm 35/2.8. Nex-7 was obviously much worse. Heck, even the ZM 50/1.5 shows some color shift on the NEX-5N, but no one talks about it.
My bet is that some 35s will be ok, some won't be, and everything wider (M lens wise) will have color shift issues. Even the 35 Summicron ASPH has color shift on Leica's own cameras, without the software correction.
Smearing is what I'm curious about, because that can't be fixed. I think that's where the new A7r sensor may shine.