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when you aim the camera down, you see the tripod legs. it is basically taking a bunch of shots in all direction (full circle maybe 8-12 shots from aiming camera straight foward, another 8-12 pointed towards sky full circle, and another 8-12 shots pointed downward angle at ground full circle.) and stitching them up. so equipment:
-wide angle lens
-panoramic stitching software
i'm not too familiar with the softwares but i have messed around with some a few years back. there are a lot out there.
indoor & outdoor are taken the same exact way.