Just bumping this up to see if anyone has any ideas?
Trying to capture birds in flight. I guess I have two use cases I'm trying to master:
Q1. Already focussed on a bird, and want the AF to follow it when it takes off and flies (more or less) towards me.
A1. I guess that AI Servo is correct here. I have also set the AF so that all focus points are used.
When the bird takes off towards me then the camera AF just does not follow it, in fact it makes no attempt.
The selected AF points (the ones in focus) just stay where they were in the background.
I have tried all AF cases and they dont seem to make a difference.
My conclusion is just that the bird is too small, and therefore does not register.
Q2. Set up the camera so a bird will fly from the left into frame as it lands at the right of the frame.
In this case the bird is a lot nearer and therefore fills out a lot more of the frame. Also tried using my
24-105 at around 50mm instead of the 70-200 so that the amount of time the bird is crossing the AF points is longer.
A2.Still, I cant see the AF trying to follow the bird, not matter what case is used, using AF Focus.
I have read the 1dX Autofocus guide, but still dont have the focus tracking the way I had hoped it would!!.
Are there any showstoppers (e.g. aperture) that I should know about that may interfere?
Would anyone be prepared to say which settings they would use?
As I'm mainly trying to shoot small birds, are they maybe too small for the AF? Too fast?
With AI Servo, taking a fairly large object, get it in focus, slowly move the camera then the AF points
try to stay on the object, so it doesn't seem to be totally broken.
Just found this:
It talks about "Large and rapidly moving objects", not small birds I guess.
Thanks in advance.