Finally we have charts for the Distagon T* 2.8/21mm ZF, and it's exactly as we could have hoped!
Actually it's better than I hoped. Have a look...
For comparison, here are the original Contax charts:
Oh, and dare I say that the Contax is weaker? The distortion figures aren't the best and the siblings share this trait.
I don't have anything to add - I'm completely satisfied with these figures. Can't wait to be in a position to buy this lens.