I experimented here by using shutter priority, to capture the moment of take off and keep it sharp. I set the ss to 1/1600, and ISO to auto. At the moment of taking the shot, the camera set the F stop, and set the ISO to suit the light at that particular moment. I liked the spread of the wings, and its amazing how well shaped they are from the instant of take off.
Canon 50D
100-400 L IS USM @400mm
1/1600
F/5.6
ISO 1000
Love that AMAZING pose! Eye contact is great and all that room arround works very well IMO, whites seems a bit hot, but I don't care with SUCH a pose!! Congratulations!