Photographer Jay Goldsmith could not have worked harder. In an age of instant digital photography and high-speed inkjet printers, he missed his old darkroom. Goldsmith’s exhibition, “What Artists Look Like,” is an homage to the days of crisp black and white images and hand-made prints. The free exhibition features unique portraits of Seacoast artists and samples of their work, and runs from Friday November 3 to Saturday December 23 at Discover Portsmouth, when the institution closes for the winter.