What is the development and popularization of cameras?

Daguerre's very popular invention greatly promoted its subsequent development. People's research on cameras has not stopped because of this. Talbot, an Englishman, invented "Talbot photography" at the same time as he invented the silver disk camera, so that a negative can obtain multiple photos. Decades have passed, and Americans have caught up. George of America? Hysmans invented the film to make preparations for reducing the cost of photography and entering thousands of households. 189 1 year, the price of cameras is affordable for many people, and cameras have become a simple and popular entertainment tool in the family.