Largest photographic negative

A single photographic print called "The Great Picture" was created over the nine months leading up to 12 July 2006 by six photographic artists known as The Legacy Project. Aided by 400 volunteers, artists and experts, the team converted an old aircraft hangar into a giant pin-hole camera. They applied 80 litres of gelatin-based silver halide emulsion to a seamless 3,505.75-sq-ft (325.44-m²) canvas – 111 ft (34 m) wide and 32 ft (9.8 m) high – that was specially made in Germany. The picture was developed in a custom Olympic-sized developing tray using 10 high-volume submersible pumps, 600 US gallons (2,300 litres) of developing fluid and 1,200 US gallons (4,500 litres) of fixing solution. The photograph shows the control tower, structures and runways at the heart of the US Marine Corps Air Station El Toro (in Southern California, USA), which was closed in the mid-1990s. The canvas was hung from the ceiling at a distance of about 80 ft (24 m) from a pinhole of just under 6 mm (0.24 in) diameter and 15 ft (4.6 m) above ground level on the hangar's metal door. The distance between the pinhole and the cloth was determined to be 55 ft (17 m) to provide coverage of the canvas with an exposure time calculated at 35 minutes.

n/a