The idea is to seperate the shutter function from the focus function. While this technique may take a little getting used to, in the long run you'll be far more accurate with your focus.
1. To do this, go to custom function 4 and set it to setting 1. (setting 0 is default)
2. Turn your AF setting to AI Servo. Leave it there from now on and never take it off.
From here, your focus will be controlled by the * button on back of the camera by your right hand thumb. When you press the * button the AF will be engaged and will focus on whatever the red box in your viewfinder is set on. To stop focusing simply take your thumb off the * button.
The only time you'll take your camera off AI Servo is if you use your AF assist beam on your flash to focus. Your camera must be set up in Single Shot drive mode as well as One Shot AF mode.
Try it out and let me know what you think. I tried it out a bit the other night and I like it.
Also what's a post without a picture, introducing me and my family:
