I have previously winged that a review of a Sony camera was flawed in that it did not deal with the challenges that the camera had to win. Its only fair to comment when a review is 'On the Right Track'. Silverstone was a good venue to demonstrate the capabilities of the EOS-1D Markll. But what were Canon UK, or whoever lent the camera for review, doing when they lent it without a CFast card? Is there a problem with CFast cards? I am not in the market for a top full frame action camera from Canon or Nikon but have recently taken delivery of a Nikon D500, a sort of mini version of such machines. I used it initially with a CF card and then with a Sony G series XQD card. With the XQD in the Nikon one can immediately totally ignore buffering. Just forget it. It isn't an issue. This is not a critisism of AP or Nick Dungan who have done a good job. It is a comment that the camera was not supplied with the ideal memory card.