Hey guys...Shooting some sports and some weddings and was just wondering how I could achieve focus lock on the 50D? I want to be in AI Servo so I can focus on moving objects, but there are times where people are standing still and I dont want the focus jumping around on me. I want to just set middle focus on camera,focus on the eyes with middle focus point, have it lock, then reframe the image and shoot. This should keep the focus where I locked it no matter where I frame the shot so the eyes will be in focus.
My problem is, I know it can be done, but I dont know how. Anyone know how that would be willing to help?