Cincinnati Waterfront Panorama Daguerreotype

Owned by the Cincinnati Public Library, it is one of the most astounding examples of daguerreotype (the first known photographic method) in existence today. The clarity of each of its eight copper panels is equivalent to a 140,000-megapixel digital image, thousands of times better than high-end commercially available digital cameras today.

by (http://www.rochester.edu/news/photos/daguerreotype.html)