The Photogram or "Sun Print"

A photogram is a photograph made without a camera.

Objects placed on sensitized paper are exposed to light. Where the object covers the paper, the paper remains unexposed and light in tone. Where it does not cover, the paper darkens. After exposure, the paper is developed in the darkroom to make the image visible. Then it is fixed.

The earliest photograms were made by the Englishman Thomas Wedgwood around 1800. He called them "sun prints."

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