mcclizam wrote:
Thank you, gvarner. I've got it in Servo, which is the Canon setting for something in motion. And I'm holding the BBF button down once I've focused on him--that's correct, right? In other words, I lock focus and let go of the button for something still, and only can recompose on the same plane. With something in motion, I focus and then keep holding the button down as I follow, say, a moving dog. Thanks for clarifying.
That is correct as to the use of BBF, held down continuous focus, focus and release for static subjects.