Thx peeps
superb! the 1D III's lightning fast AF obviously helps, but for me, the challenge is just keeping the little buggers in the viewfinder!! do you track these, or focus at a preset point and shoot when they fly through?
I'd love a 1D III

Could only afford an old second hand 1D IIn though
I've tried the preset focus but the DOF is thin enough at the distances(and light) I'm working at that it doesn't do much good.
I'm trying a couple of methods
1.
Track them coming from afar, keep them centered and as they get close enough get a decent size snap away.
2.
Similar to the first, but instead focus on the water below them(and a little closer to account for angles)
8 out 10 times the system is busy hunting for focus, seeing as its damn hard to keep one centered, so most passes no shots are taken.
Out of the other 2/10 times most shot are slightly OOF which make them worthless.
This time I went out I was shooting for 3-4 hours (twas too dark most of the time, overcast, winter, not enough light) took about 3-400 shots and had about 15 sharp shots in the end.
Love that keeper ratio :blushing: