http://www.sevilla111.com/comosehizo_en.htm
Sevilla 111 Gigapixels is a huge panoramic and interactive photograph of Seville city, which consists of 111 thousand million pixels. A new worldwide record since December 2010.
The result of several months of work is the biggest panoramic photograph of the world; a 613,376-pixel wide by 181,248-pixel high photograph, consisting of 9,750 images, taken at an altitude of 60 meters from the highest platform of Torre Schindler, in Isla de la Cartuja. Just as a matter of interest, if we printed this image, it would take up to 13,800 square meters, which is more than two football stadiums.
The last days we took about 14,000 photographs, which included all the additional images we had to repeat to correct the errors caused by vehicles and pedestrians in motion. Since the beginning in April, we took over 35,000 photographs. The camera is a Canon 5D mkII with an 400-mm lens with duplicator also by Canon, which is equivalent to 800 mm of focal distance. The shutter speed was 1/800 S with an aperture of f16 and ISO800.