The discovery of the World’s Oldest Photographic Lab opens the door to Petiot-Groffier‘s photography darkroom, closed for 152 years. Complete with cameras, chemicals sealed in glass bottles, and notebooks for processing and printing Daguerrotypes and Collodions. The room was revealed when the building changed hands and the new owner entrusted Pierre-Yves Mahé, the initiator of the Niépce House in Saint-Loup de Varennes, France, to preserve and protect the long hidden treasures.
photos Pierre-Yves Mahé







































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