Nice timing for this thread!
Viggo, sorry to hear you are going through the aggravation, as you were enjoying the lens and had high hopes for it.
I just this morning reached out to a local lens renter to ask about his copy of the ef 50mm 1.2, as I'm seeing the value of in-focus dreamy over OOF sharp. I'll rent first and see if I can handle the focus shift for closer subjects, which is a big part of my style.
I have sharp and fast: Sigma 35mm Art, fantastic. Canon 85mm 1.2, ultimate. (Note that I actually sold an ef 35mm 1.4 after owning it for four months because it was not sharp and had the worst CA I've seen since my old Sureshot A-80. 'Course having come from Amazon, it might have gotten banged around, repacked, etc.)
As y'all might remember, I was another who got a 50mm Art with dodgy AF and sent it back thinking by now we'd have a firmware update or SOME response from Sigma other than, "Well, it is a particularly complex lens, and you really should buy the dock." (That from their tech support.)
So, worn down from waiting for Canon or Sigma to put out something perfect...
Thanks! Yeah, I have enjoyed it so far, but ...
I sold the 50 L exactly because closer than 1-1.5m it's veeeeeery soft, to the point that if I used off center points I couldn't tell the difference between where it hit and the blurry parts, lol.
Called a service shop today and he asked the usual stuff, if it was constantly back or front focused. But when I explained that I use both the docking and Reikan Focal, he just said "ah, then we have some parts to change" so CLEARLY they are aware of the issue, and I already knew, but perhaps they have parts now that can make this go away finally. I REALLY like the lens for everything else, so fix the AF and it's completely epic.