The Carl Zeiss optics, with which Camera Obscura is equipped with, enables viewing a 360-degree panorama of Mülheim, whose image is projected on a white table. Camera Obscura is placed in the water tower of the early twentieth century, in the lower floors where the museum of film prehistory is. Its exposition includes more than 1,000 exhibits on technologies of moving images covering the period from 1750 and until the start of film-making.
Here you can see Thaumatrope - a toy that uses an optical illusion, kaleidoscope, phenakistoscope - a device for demonstrating moving objects, anamorphic lenses, and other devices, that existed before cinematography.