Composite pictures are intended to create an imaginary situation -for whatever reasons. They are usually presented as one final picture, with added elements from other images, thus changing the meaning of the original. You can not make composite images by just using one picture because composite images themselves are made up from a variety of different photos put together. So if you take one picture only, it is not a composite image.
The different between polar and spherical ''worlds'' is the polar coordinate. In Photoshop, I rotated the circle 180 degrees and then clicked ''polar coordinate''. On the other side, for spherical, I did not rotate it, just leave it the way it is and click polar coordinate. Polar images make me feel like I'm gigantic person looking down to Earth from another planet. And spherical makes me feel so tiny.
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