Nikon D800 + fisheye Nikon 10.5mm. f/2.8 on TomShot 360 pano head or Samyang 12mm. f/2.8 on Nodal Ninja 5 pano head.
Nikon 10.5mmm: 4 images around + 1 image for the Nadir. Samyang 12mm.: 6 images around + 1 image for the Nadir. Ptgui for stitching and building the "equirectangular" view, then Pano2VR for making the spherical view.