Panoramic of Paris: Photo by Bernard Hoffman / ​ Time Life Pictures / ​ Getty Images; Niepce’s photograph: Photo by Joseph Niepce / ​ Getty Images; camera obscura: Culver Pictures
Panoramic of Paris: Photo by Bernard Hoffman / ​ Time Life Pictures / ​ Getty Images; Niepce’s photograph: Photo by Joseph Niepce / ​ Getty Images; camera obscura: Culver Pictures