Technological
The technology used for the Kodak was a dry plate. George Eastman came upon a formula for a dry plate, and he then incorporated it into his own camera."George Eastman was one of the first to demonstrate the great convenience of gelatin dry plates over the cumbersome and messy wet plate photography prevalent in his day. Dry plates could be exposed and developed at the photographer's convenience; wet plates had to be coated, exposed at once, and developed while still wet"(kodak.com). Eastman also invented the first flexible roll film. "It took 100-exposure rolls of film that gave circular images 2 5/8" in diameter" (americanhistory.si.edu).
