Shooting diagram for the Williamson photosphere, which was used to film 20,000 Leagues Under the Sea (1916, dir. Stuart Paton). The camera & cameraman were placed in the photosphere and lowered into the sea, remaining connected to the surface via a watertight tube
The view from inside the photosphere: Actors prepare to shoot 20,000 Leagues Under the Sea’s (1916, dir. Stuart Paton) underwater funeral procession scene.
This adaptation of Jules Verne’s novel was the first undersea fiction film, & is now mainly notable for the groundbreaking special effects that made it the sci-fi/action blockbuster of its time.