Obscura is a tribute to the work of the 10th century Arab scholar Ibn al-Haisam (in Europe known as Alhazen), the author of the fundamental work The Book of Optics, who studied the nature of light and the structure of the human eye, and also experimented a lot with the camera obscura. In the footsteps of Alhazen, Siba Sahabi spent four weeks in Egypt, taking photos of Cairo.
