This oriel window at Lacock Abbey, Wiltshire, England was the subject for early attempts to make a photographic negative image on chemically-treated paper between 1835 and 1841 when Henry Fox Talbot announced his paper-based calotype process. Fox Talbot was then unaware of earlier efforts in France by Niépce to capture negative images on chemically-treated pewter, and later by Daguerre on chemically-treated copper. Eventually the negative images would become captured on chemically treated plastic and would become the basis for pre-digital photography.
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