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EOS Bodies - For Stills / Re: AF - one shot with 5dmkIII or 1dx
« on: May 22, 2013, 05:02:58 AM »
They're not mutually exclusive. I think the expanded points were designed to be used for moving subjects (AI Servo). I choose my expanded AF points (either four or eight) depending on how fast my subject is, how big it is, and how fast I can keep it in the frame. I always 'Spot AF' or '1 pt AF' for static objects...more so with portraits wherein one needs precise focus (i.e. eye). Expanding the focus point in that scenario is calling for trouble which might focus on the nose or forehead instead.
