This class represents a photographic heritage. Photographs: negative, positive, photographic processes that give rise to unique products (daguerreotypes, ferrotypes, polaroids, chimigrams, etc.), digital photography; complex elements like albums, folders, photomontages, panoramas, porfolii. Photographic funds: conceptual entities that are characterized by the accumulation of multiple homogeneous or heterogeneous physical units from the point of view of the materials that compose them and which represent in their totality a cultural heritage.