Tent camera obscura

Foldable tent camera obscura. This consists of a tripod covered with a black canvas. A kind of periscope protrudes from the top, which has a built-in adjustable glass prism that acts as a lens and mirror and reflects the external image on a flat surface inside the tent. The draughtsman sits in front of the tripod, covers himself with the black fabric and traces on a piece of paper the image projected by the lens inside the tent.