Has anyone tried the A9 with Sigma and Canon lenses using an MC-11 or Metabones adaptor yet? How does the AF perform when shooting fast-moving subjects (I'm guessing Sigma lenses with the MC-11 will be better than other combinations)?
I'm not particularly interested in the A9 myself (need more MP, so waiting for an A9r, that will likely go head-to-head with the D820 and 5Ds2) but it would be a pretty good indication of what Sony has managed to do with its AF system and what will show up in the next high-resolution model. That the A9's AF performance is being reported as equal to the 1Dx2 and D5 seems to be a pretty good thing in itself.