The concept of KISS is the coherent implication of our own experiences with flexible VR-systems:
Once you have a great panorama subject in front of your camera, you are missing your VR system.
After some trial and error, you are using your flexible VR system only with one or two lenses.
„Multi-Row“ is a quite elaborate and costly alternative approach for a perfect pano with fisheye. It makes only sense for "giga-pixel" panos and static subjects. For full-spheric panos you better use an ultra-wide-angle or fisheye lens in one plane - maybe with an additional shot for nadir and zenith.
Only boring subjects do allow the use of complex and heavy equipment.
The flexibility and manifold adjustments of VR systems prove themselves in practice as the main source of error.
Due to the high cost of a VR system, panoramic photography is mainly the reserved field for the discerning photographers with SLR equipment.
The consequent concept for the ideal VR system is called KISS.
KISS is the VR system you will not leave at home.
No matter whether you shoot a cylindrical panorama with wide-angle lens or a full-spherical with your fisheye: each one will yield with best matching accuracy.
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