Quote:
Originally Posted by don 147
I shoot 2 Canon 1DMKIV's and use back button only, have used it now for 3years. Wouldn't think about doing anything else. I'm a sports photographer and it is wonderful to just press the back button and hold it down, the camera will continue to focus on the subject as it moves toward or away from you. (AI servo) You can also press the button and then let it go and reframe as needed. It may take a few days to get used to it, but once you do, you'll never go back.
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That's great, but I do that with front button. Either will do.