For most of the 20th Century, the traditional camera and the roll of film were ubiquitous household items. Not anymore. The rise of digital photography has spurred some to look back at the snapshot and what it offered as art. We’ll explore that idea this hour with John Rohrbach, Senior Curator of Photographs at the Amon Carter Museum in Fort Worth and Sarah Greenough, Senior Curator of Photographs at the National Gallery of Art in Washington, DC. A recent National Gallery exhibit, “The Art of the American Snapshot, 1888-1978: From the Collection of Robert E. Jackson,” opens at the Amon Carter this weekend.