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That is a good capture of the two ducks in flight given the distance Allan, and the fact that you took it with the 2x extender in place!AlanF said:I reciprocate your comments, Jack.
AlanF said:Thanks Grant. Looking back a year ago, I posted a series of shorteared owls in flight using the 400mm DO II + 2xTC + 5DIV. They were about 100m away against a background of hay and trees.
http://www.canonrumors.com/forum/index.php?topic=19270.msg646154#msg646154
Given the present discussion about Hazeghi migrating to Nikon, it is amusing to reread the caption:
"Ari Hazeghi writes that the 5DIV + 400mm DO II + 2xTC is too slow focussing for other than slow moving birds against a blue sky. Some 50% of my shots were ok for these flying low and fast against a background. All 100% crops at f/8, 1/1600 s and auto iso (~640-1250)."
AlanF said:The point is that the lens and camera do lock focus accurately and fast enough with the 2xTC to be useful for distant BIF, which is when 800mm is really needed. If birds are that far away, I am happy to get a nice record for my end of year album. If they are close enough, the bare 400mm DO II on the 5DIV is blazingly fast and accurate and I can get great shots, and also with the 1.4xTC. The 100-400mm II is no slouch either. My Sigma and Tamrons are not in the same league for AF. Ari writes that the 1DX does focus fast with the 2xTC so you should be even better placed.
AlanF said:Jack same here for a camera for my wife. She does well with the 5DSR + 100-400mm II but it is heavy for her. I have been considering several systems from the RX10 IV, Panasonic G9 and Olympus OMD-1 II. Like Ryan, I would plump maybe for the D500 and 300mm f/4 PF. I just wish Canon would come up with a competitor to both. The Tamron 100-400mm on the 5DSR is noticeably lighter and quite good but not for BIF. I am not giving up on my 5DIV and 400mm DO II, which I think are just superb, giving a wide aperture bare and 800mm at the other extreme, which I use for most of the time.