Our flash is placed behind the subjects and directed at a white wall, so when it pops at the start of our exposure, it lights up the wall and captures the kids in silhouette. Stage two is the long ...

"Moms just show up in droves and have their kids done," he said. Johnson, 50, an Orange County, California, native, got his start in silhouettes as a "starving art student" at the Art Institute of ...