“Recently, photography has become almost as widely practiced an amusement as sex and dancing,” wrote the culture critic and free-range intellectual Susan Sontag in 1973. Were Sontag alive today (she died in 2004), she would surely be slapping her forehead and bemoaning her abysmally inaccurate “almost” qualifier, given today’s specter of nearly everyone in the industrialized world carrying high powered cameras that sit snugly in their pants pockets or purses, mere add-ons to the smartphones that power their 24/7 connectedness to the world. Surely, no one anywhere can possibly be having sex or dancing at even a minute fraction of…