A solargraph is a photograph taken with a pinhole camera containing not film but black-and-white photosensitive paper. Exposed for a time period between a day and six months, a usually undesirable side effect of long-term light exposure to the unfixed paper causes a flipped color negative image to form.

Any flowering, leafing, growing, or breeze-swaying flora caught in the field of view are re-exposed daily as the sun passes by.

Thus any solargraph image of flora will document both plant motion and planet motion.


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Pinhole camera constructed of one Christmas cookie tin, spray-painted black and wrapped in duct tape. Paper is 4x6 shred of Ilford B&W. Exposure March-September 2009. Paper negative processed according to directions here.

Subject is the Bradford Pear tree that takes up my entire front lawn.