"soratama" is a photographing technique invented by experimental photographer Zenji Uehara, which enables you to shoot a spherical view of a scene from a suspended viewpoint through a transparent ball.  The technique is widely enjoyed by hobby photographers who use a handmade apparatus made of a cookie box and an acrylic ball.
Soratama 72 is a high-quality version of this apparatus using an optical glass ball lens and an aluminum frame.
You can put it on your camera lens, just like an ordinary lens filter.