I’m pretty sure that the multiple cameras all have different focal lengths, which allows the software to composite a single image from the multiple signals. This allows the intersecting fields to enhance quality when zooming and discriminate smudges/dust that you wouldn’t want to be in the shot.

Are you referring to Arc or to Zen?

You can give a man a drink and his thirst will be quenched for a day, but if you show a man to the water source, he will be quenched for the rest of his life.