Quote Originally Posted by Joel Eade View Post
It works very well for birds, especially flight shots where you can continuously adjust focus with your thumb and shoot with the index finger.
Just playing devil's advocate, you can continuously adjust focus with your index finger and shoot too.

Quote Originally Posted by Joel Eade View Post
Also, even though I may be in AI Servo, it can mimick One Shot mode in that you can focus using the back button and then re-frame the image before firing the shutter.
Extending the devil's advocate, this is probably a rare thing, so why "work" for 85-95% of your shots to mimic One Shot when you could instead remap AF-ON to be an AF-OFF button for that 5-15% of your shots to mimic One Shot?