Quote Originally Posted by Dave Throgmartin View Post
Maybe with 1DX, 5D3 etc it isn't an issue, but BBF is worth its weight in gold with the xxD, 6D, and Rebel cameras.
This is what I discovered.

I was very frustrated with the focus, especially in AI Servo, when shooting birds against busy, branch-heavy backgrounds. Focus hunting was awful on my 60D. After switching -- as recently as a few months ago, I woke up -- I'm back to considering a 6D as a viable FF option, though the center point is inferior to my 60D on slower than 2.8 lenses. Depends on how much Santa and my employer's Bonus Fairy brings.