5d3 how to change focus on video?

Those are the people who dont use AF.

Many people, especially pros, use Magic Lantern if doing a lot of video, and this makes life so much easier if you need to re focus during video.

The only Canon DSLR that has constant AF, like a video camera, is the 650D, and that can do it becuase it has a hybrid sensor, designed for this.

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Dave.
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