:? OK, I'm shooting with the 20d and my 200 2.8 IS with 1.4. Camera is very responsive but here's the question: shooting moving birds in AV, spot focus; can I set th cam up to auto focus [change focus while following the birds] as the birds move in and out. As I get 50% or so in focus, but wonder if I can do better. By the way, been shooting at ISO 400, F8, gives me a shutter speed of 800 -1200 approx.
style="BACKGROUND-COLOR: #000000"Also, any suggestion on what F stop to use for best DOF with this set up?
style="BACKGROUND-COLOR: #000000"Any other tips or hints would be great. Thanks much.:-)