What kind of camera do you use?
For 360° photos I use a DSLR camera with very high quality lens, and “nodal” tripod head to avoid parallax issues which can cause stitching errors. Finished panoramas are approximately 17k pixels wide.
What does “spherical panorama” mean?
Spherical panoramas allow you to not only look all around, to see what’s in front of you and behind you, but also to look all the way up and down. Cylindrical panoramas allow you to look all the way around, but not up or down. All of the 360° panoramas I create are spherical.
Where’s the tripod?
You may have noticed when looking at panoramas elsewhere on the Internet, that when you look down you see a tripod, or a tangled mess of distorted pixels, or a big logo. That’s because it takes extra time and skill to digitally erase the tripod, so when you peer below you only see the floor or ground as it would appear in the scene. My panoramic photos have tripod/camera footprint carefully removed.