who introduced the flexible film to the market
Photographic film The first flexible photographic roll film was sold by George Eastman in 1885,[9] but this original "film" was actually a coating on a paper base. As part of the processing, the image-bearing layer was stripped from the paper and attached to a sheet of hardened clear gelatin. The first transparent plastic roll film followed in 1889.[10] It was made from highly flammable nitrocellulose ("celluloid"), now usually called "nitrate film".