Wonderful thread and tons of good info and links. Thanks everyone.
For birds in flight my basic settings are -
1/1250
ISO200
f5.6
AI Servo,
Single point focus.
Evaluative metering.
These get me reasonable results. But I want outstanding results.
About focal lengths - yes that is always an issue but note that no matter what lens we have we will always find ourselves 100mm too short!
My biggest problem is getting the underside of the bird exposed properly. How do you guys get around this?
Thanks.