Shed. By inserting a lens into the door of the shed and by blacking out the interior, the garden shed was converted into a camera obscura. A real-time moving image of the outside world is projected upside-down onto the interior wall of the space. As well as being a camera obscura the converted shed can be used as a large portable camera. By placing sheets of photographic paper onto the wall of the shed a giant photographic negative can be produced.