Or n cameras for that matter: Taking 3D Shooting To The Limit — with 3 Cameras! – Creative COW.
I have been thinking about this same idea. At times, we don’t know what the inter axial lens spacing should be for 3D – so why just shoot with n cameras instead of 2?
Having 2 cameras gives us stereoscopic views. But sometimes we need different spacing – adding a 3rd or 4th or more cameras to the camera array enables us to record multiple stereoscopic views simultaneously.
Before long, as n goes to infinity, I guess we end up with holograms!