Before it appeared in 1900, cameras were distinctly unwieldy, if not downright cumbersome. Early cameras tended to be made of a great deal of brass and mahogany and took pictures on to large glass or metal plates, often requiring exposure times measured in minutes. To photograph far-flung places, porters and pack animals were often needed to carry the equipment. Photography was an activity involving patience, toxic chemicals, and brute strength. It was not something the ordinary people indulged in. US inventor George Eastman took an important step forward in the 1880s, when he popularised a flexible film that did away with the need for weighty plates. His first "Kodak Camera" went on sale in 1888, pre-loaded with enough film to take 100 photographs. When the last picture was taken, the entire camera was sent back to Kodak to be developed.