I used to set up one camera for interviews, and, in some cases when shooting on the hoof this is the only way to shoot. However, when time allows or if you are setting up for a more structured video, two cameras is the way to go. This is especially true with a piece directly to camera, like an address or an announcement.
Coverage and editing flexibility
The main reason is to give yourself options in post-production. With two angles, you can cut between them to make the edit less static and more visually engaging. This is especially useful when you need to trim out verbal stumbles, long pauses, or “ums” and “ahs” – the angle change masks the edit so it’s not jarring.
Different framing options
Typically you’d set up one camera as your main shot (perhaps a medium close-up) and the second as either a tighter close-up or a wider shot. This variety keeps viewers engaged and lets you emphasize different moments – cutting to a close-up during an emotional or important point, for instance.
Technical backup
If one camera malfunctions, has a focus issue, or runs out of battery/storage, you’ve got the other camera as insurance. Though if you are worried about this at all, remember to record sound on an external device rather than through one of the cameras.
Reaction shots
If you have an interviewer in frame or plan to show them, the second camera can capture their reactions while the first stays on the interviewee.
The standard setup is usually one camera straight-on or slightly to one side, and the second at about a 30-45 degree angle to the first, both on the same side of the interviewee to maintain proper screen direction. Both cameras should be rolling continuously throughout the interview. They should also be recording sound so you can sync up in post.
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