4 types of photo film
daguerreotype 1839, France
The earliest practical photographic process didn’t use film. Lightsensitive chemicals were formed on a silver-plated copper sheet.
Photographic Plates 1850s, great britain
Photographic plates came before photographic film. Light-sensitive emulsion was painted onto glass plates to create an image.
Flexible Film 1885, united states
The first flexible film roll was sold by George Eastman but this original film just consisted of a coating on a paper base.
Polaroid 1973, united states
Polaroid introduced an instant film containing chemicals that will complete the developing and fixing process after each exposure.