Hi, I've just acquired the 200-500 and focus seems pretty quick to me... I've only been out a couple of times so far and need to get used to it, but so far I'm quite encouraged.... I've got it on a D7200 and together (new) I got them for £1530....ive been thinking of the 1.4 tc can anyone tell me if the Kenko is compatible... I've seen a pdf from Kenko site and 200-500 isn't there???
