Heliography for my sons
Dissolve 3 grams of Syrian asphalt in 15ml of lavenda oil. Wait a few days. Deposit the emulsion onto a tin plate with a brush. Get it dry on a pre-heated cast-iron plate for about 20 minutes. Expose to light for about 2-3 days. Rinse the unsolidified emulsion with terpentine or lavenda oil.
Joseph Nicéphore Niépce called this process heliography and described it in ‘Notice sur l’Héliographie’ in 1829. It is the first photographic process that enables to record reality on a metal plate from an optical darkroom (camera obscura)
camera obscura 2005/1-∞ (with Burkhard Walther)
I would like to invite you to take part in this worldwide project. Every week on Ebay platform two subsequent numbers are bid which mark two spots on a box with dimensions of: 18cmx13cmx3cm. On a back inside wall a black and white unexposed film is attached. Two people who win the auction get the box in turn (a double pinhole camera), make a pinhole in the assigned place exposing their film part to light. This way one photography is being created by two people in two different places on Earth. After digitalization everything is shredded - the developed negatives, the camera, the texts and all post packaging. The virtual trace of this global photographic ritual is presented on the Internet: camera-obscura-1-inf.net.
Przemek Zajfert – born in 1959, lives in Stuttgart. Self-taught. A street artist. Until now about 15 thousand people have taken part in his participatory projects (camera obscura 2005/1-∞, the 7th day). He has been travelling with a black cube with dimensions of 2x2x2m around Europe for many years. He installs it in different public places, marketplaces and promenades. This cube stands for his gallery, his workplace and at the same time a magic site, inviting random passersby for a short but intensive encounter.