The document provides a timeline of key developments in photography technology from 1790 to 1975. It describes early inventions like the camera and collodion process in the 1800s. Major innovations included roll film by George Eastman in 1884; the Brownie box camera in 1900, making photography widely accessible; and the first 35mm camera by Oskar Barnack in 1913. Later, Edwin Land invented instant photography with Polaroid in 1948 and Steve Sasson created the first digital camera in 1975. The evolution of more portable and automated cameras expanded the field of photojournalism over time.