This came in handy when I shot a wedding earlier this year. I set it up so C1 was for outside the chapel, C2 was inside the chapel, and C3 was indoors at the reception hall. I was on the move all day, and there were a few times that this setup saved me precious seconds — and got the shot I wanted because of it.
But it's not just useful for the fast-paced madness of your typical wedding day. Earlier today I went for a walk, and set my camera up like this before I left:
- C1: "All purpose mode" ISO 200, f/8, aperture priority, one-shot AF, center-weighted average metering, center autofocus point, -1/3 av exposure compensation
- C2: "Action shot mode" ISO 400, f/8, aperture priority, AI servo AF, evaluative metering, high-speed burst, all the autofocus points, -1/3 av exposure compensation
- C3: "Panning mode" ISO 200, 1/30 second, shutter priority, one-shot AF, spot metering, center autofocus point, -1/3 av exposure compensation