Reinvents the family portrait and provokes us, in these times of digitalisation and shared images, to reflect on the fundamental cell on which every society is based: the family. From 1839 when it was invented, photography has served to create portraits of individuals, and soon thereafter portraits of families, later placed in photo albums. Photography, collected and archived, entered the intimate sphere, enabling people to arrange the fragmented images of their lives as they saw fit. Following its forerunners (miniature portraits, silhouettes, physionotraces), the photographic portrait also served the new expectations of the emerging urban bourgeoisie and its need for social representation. Studios opened up in cities everywhere to meet the fast growing demand. In addition, the new medium distinguishted itself with its esthetic superiority. Even as it emerged, although the technique was still very primitive, photography enjoyed an exceptional quality of artistic finish (Gisele Freund) . What can photography show us to day of the visible and invisible aspects of family sociology? How do the roles we expect them to play betray the emotional realities and complexities of lived life? wonders Daniel Mendelsohn, in his introduction entitled Unknown Faces/ Redeeming Structures . AUTHOR: Isabelle Boccon-Gibod began making use of photography when she lived in England, and has largely devoted herself to it since her return to Paris in 2004. She has taught History of Photography at the Paris College of Arts. A graduate of the Ecole Centrale School of Engineering and a former student at Columbia University, after a brilliant career in the paper industry, she now serves as non-executive director on the boards of six French industrial companies. In addition, she has made a career as an author in France : she has published Fors interieurs, rendez-vous avec des mathematiciens (Leo Scheer, 2011), which received a special mention from the d'Alembert Prize (2012) and Entre leurs mains, enquete sur l'exercice du pouvoir (Plein jour, 2014). Structure is her second book of photographs, after Sous les ponts, Paris, published in 2014 by Editions Verlhac. She has shown her photographs and videos in Paris, Brussels and Haifa.