The photograph was made to mark the end of 165 years of film/chemistry-based photography and the start of the age of digital photography. It was taken using a decommissioned Marine Corps jet hangar (Building #115 at El Toro) transformed into the world's largest camera to make the world's largest picture. The hangar-turned-camera recorded a panoramic image of what was on the other side of the door using the centuries-old principle of "camera obscura" or pinhole camera. An image of the former El Toro Marine Corps Air Station appeared upside down and flipped left to right on film after being projected through the tiny hole in the hangar's metal door. The "film" is a by piece of white fabric covered in 20 gallons (75.71 liters) of light-sensitive emulsion as the "negative".
