Upload & Sell: On
Great review! I can't believe the Canon is 3 times faster on AF speed.
Well, you are selling your D4, are you not ? Just kidding....
That the AF of the 1DX is 3X faster is indeed hard to believe although it seems to be that way under that particular shooting condition. In addition, I have to say that the AF of the 70-200mm Mark II lens is superfast. I never used the Nikon counterpart before. For all we know, a part of the reason that they came to that conclusion is partly attributed to the difference in AF speed of the respective lenses.