I actually tried the "All focus points" on my 40D on Saturday and, to be honest, it was a total disaster. I have to confess that I was trying to take piccies of Swifts so it may have been a bit of a harsh test.
However I feel certain that in the 40D manual it states that if any of the focus points are over the bird, or whatever you are taking piccies of, then it will be in focus. This was clearly not the case on Saturday ! I made sure, or as sure as one can be, that in each case at least one, if not more, of the focus points was over the bird.
Back to the drawing board I suspect. Anybody else tried this ?
Thank you.
Yes I have, had about as much luck as you did to start. Try practicing on something a bit slower first. Swifts Swallows are a bit much to start out on.
Jim
Also try using A1 (one shot) focus as opposed to A1 servo.This is how I take my flight shots along with 400 iso and an aperture of about f8.