In front of the camera is the GWL (gigantic wide-angle fisheye lens) from "Lenses and Filters" (available at Daz 3D) and it is within the object that was modelled in Wings3D and it is transparent with Refraction 25 (index 0.25). Around the object a reflecting additive sphere. Colour by the "TunnelLit_SD" HDRI (unpublished). No light, no shadows, no sun. The camera with the fisheye lens shows around 320° of the cube.