Orangerie Meudon (Paris-France)

http://www.galerie-photo.com/photographie-anamorphique-stenope.html links to a technical paper (in french) explaining anamorphic pinhole photography and describing my camera : POLKa means "Panoramic Oberlicht Loch Kamera". On 120 rollfilm, it gives four 6x18 pictures under 295° horizontal angle of view.