No auto focus either Tamron 1.4 or 2 x on 100-400, I didn't really like either one.Manual focus takes some luck let me tell you how many shots did not make it........ I have read that a less expensive Tamron 1.4 will auto focus, I am trying it and will post pics - I still don't justify price of Canon TC; - if they are as fuzzy as these at all better to get 600 mm later ........I am so far not impressed with the TC's on these L lenses, but I am not exactly that experienced with them yet.

Was the photo of the goats courting censored? It is not showing on either my computers. I thought it an interesting spectacle-buy the way they were just chasing each other around I don't think he ever got her..........
Happy New Year