Because of the ultra-long nature of the exposure, creating solargraphs can be risky. Cans taped to trees or poles invites the possibility of theft or tampering by curious people or animals. The elements might not be kind either – leaves can grow in front of a lens and ghostly images can be formed when wind shifts the camera. Try to set up your cameras on private property and in hard-to-reach places, like a few metres off the ground. Your paper will probably still be blemished by moisture or furred by mould. But part of the charm comes from ‘ruination’ – the unpredictable colouring can be as aesthetically interesting as the Sun trails themselves.