Samy Boulos, "A Sunny Day in Wallisellen"
Zurich, Switzerland
"Wooden home-made Panorama Pinhole Camera, f/140.
Photopaper: Selfmade AgBr-emulsion after the formula of Dr. Paul F. Liesegang, "Die Bromsilber-Gelatine. Ihre Bereitung und Anwendung", 1893.
13 min exposure time."