The way to produce a panorama in which most of the scene (any direction) is at some few centimeters of maximum distance from the lens that took the images. Syn. MacroPanoramas, Claustropanos
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It's generally avoided by casual PanoPhotographers because parallax errors that produces ugly missing or ghosts parts in the composite final image are so frustrating (at the least).
Here is one parallax-error-free example (QTVR 1.5Mb).
Yes, this is my fridge. This was done using :
All these bars that are located at different distances (including closeup) make this picture a real challenge for PTOptimizer: The foreground can present parallax errors of about 40 pixels wrt the background (in a 6000 x 3000 JPG pano) for a mispositionning of the nodal point as little as 0.3mm along the optical axis!
In the case you still wish to reproduce this pano with a SIGMA8mm FishEye, I would then recommand:
More seriously, I have written here a short tutorial about close range spherical panorama.