This suggests that, even when specifically invited to, photographers have a hard time accepting the smile as legitimate in fine-art portraiture. Maybe this is inevitable in the age of Instagram, when art photographers have to work hard to distinguish themselves from the unwashed masses. Yet photography has never been just one thing, and with the advent of digital technology, the possibilities for its expansion are endless. It’s a big tent, with room inside for a range of expression, and expressions. If the art-photography world is to stay relevant, perhaps it will need to explore different corners of the tent.