[davidmanze]

  True it's on the Canon, only two percent missed shots is pretty much dreamworld material, I don't see any reason why it's not going to behave well on a decent Nikon, after all, Tony Northrup's AF comparison put the D500  above the 7DII  (don't spill your coffee BC), but then the 1DX beat the D5, (redemption),  so we are even steven in that department.

 

  Surely it will tempt many away from both Canikon as well as Zeiss........ they're shrewd dudes at Sigma, if they teamed up with Elon Musk where would that take us?...

  

                                                                 ...........taking tack sharp images on Mars no doubt!