Camera sensitive photographic materials became available, cameras began to incorporate mechanical shutter mechanisms that allowed very short and accurately timed exposures to be made. The use of photographic film was pioneered by George Eastman, who started manufacturing paper film in 1885 before switching to celluloid in 1889. His first camera, which he called the "Kodak," was first offered for sale in 1888. It was a very simple box camera with a fixed-focus lens and single shutter speed, which along with its relatively low price appealed to the average consumer. The Kodak came pre-loaded with enough film for 100 exposures and needed
Kodak Stereo Camera Realist format. This allowed Kodak Stereo Camera owners to use most accessories and services originally designed for the Stereo Realist. It was the second best selling stereo camera of the 1950s era, eclipsed only by the Stereo Realist. Though it lacked a rangefinder the Kodak stereo camera is often considered to be easiest of the 50s stereo cameras to use. Unlike the Realist, the Kodak had a self-cocking shutter. Like later model Realists it had built in double exposure prevention which could be overridden by the manual shutter cocking lever located on the bottom of the camera. Releasing the shutter