[ Thanks to Michael for this link.
]
“This photo manipulation is called a stereographic
projection, which takes a standard photograph and stretches it
around in a circle creating a Globe or Planet like image!“1. Starting – Cropping
* Open up your image – preferably one with lots of depth
of field and landscape!
* Duplicate Layer, and hide (uncheck eye):
* Crop your image – an even balance of sky and ground:
* Crop Tool settings: Guides: Center Lines:”