Ambrotype "woman With A Blue Ribbon" C.1865

Beautiful format ambrotype: portrait of a woman with a blue ribbon headdress and black taffeta dress. She is pensive and leaning on a pedestal table where a book is placed. In a very beautiful blackened wooden frame Napoleon III On the back label Maison DUVAL, Caen Photo format 9 x 12 cm Frame format 22 x 25 cm Ambroise Duval began making daguerreotype portraits in Nantes in the mid-1850s. He quickly opened branches in Angers, Orléans and Tours. Finally in Caen on November 25, 1862, he opened a workshop at 7, rue Hamon which he sold in 1866. Patented in 1854 by James Ambrose Cutting, an ambrotype is a negative on a glass plate, when viewed in transparency, which becomes a positive when placed in front of a black background. The ambrotype was commonly used from 1854 until the 1870s. Less expensive and requiring a much faster exposure time than the daguerreotype, it was widely used by portrait painters. To obtain the negative of this unique object, a previously cleaned glass plate is covered with a layer of collodion. After drying, a transparent varnish is applied, as well as sometimes color highlights. Presented on a black fabric or paper background, it is delivered set in a union case or in a frame as for daguerreotypes, which often creates confusion in the identification of these two processes. https://www.lavalisearlesienne.com/product-page/ambrotype-femme-au-ruban-bleu-c-1865