These days, we all carry a high-definition, HDR, 4K camera in our pockets at all times—that wasn't always the norm . For most of human history, cameras didn't even exist. And even after their invention, most people couldn't afford them. So, for a brief, magical period, people would visit specialized studios where professional photographers took their pictures. These sessions were special occasions; entire families would dress in their finest attire and spend hours posing for the camera. The res…