Just picked up this lens to use on my D750. I'm coming from a 5D3 and 50/1.2, a combo I have probably 75k+ shots through (all that to say I spend a lot of time with fast lenses). I'm finding the 58/1.4 a little ... inconsistent, at best. I have it at +10 microadjust now, and it seems close to accurate, but still not enough to count on. I wasn't expecting much sharpness wide open, but I figured it wouldn't give much up to my 50L. So far, the 58 seems soft enough that I have a hard time telling if it's actually in-focus.
Do I return it and hope second copy is better? Or is this just the way it is, and I'm expecting too much? I don't need razor sharpness wide open, I'm not a pixel-peeper. I need accurate focus, and great character and rendering, which this lens seems to have in spades. So I'm hesitant to even return it. Even with the issues so far, it's beautiful. Reminds me of my 50 Summilux in some ways.