The History of Camera - Analog Camera

Analog photography is photography that used a chemical process based (e,g. negative film or plate) recording medium. ...In a film camera that used the gelatin-silver process, light falling upon photographic emulsions containing silver halides is recorded as a latent image.

Photographic film or negative film is a material that is used in analog cameras for recording the images. It is made of transparent plastic in a shape of a strip or sheet and it has one side covered with light-sensitive silver halide crystals made into a gelatinous emulsion.

When a negative film is exposed to light by a the camera, it chemically changes depending on the amount of light absorbed by each crystal. These changes create an invisible latent image in the emulsion, which is then fixed and developed into a visible photograph. Black and white photographic films have one layer of silver halide crystals while color film has three layers, each sensitive to a different color. Some color films have even more layers.

Negative Film

George Eastman started use the paper film, and used the photographic film for a first time and started manufacturing paper film in 1885. before george eastman switching in to celluloid in 1988-1989. his a firts camera george eastman. they called kodak camera.

KODAK CAMERA

The first film that was in a roll and flexible was made by George Eastman in 1885, but it wasn’t on synthetic but on paper. The first roll film on transparent plastic (on nitrocellulose which is highly flammable) was invented in 1889. "Safety film" was introduced by Kodak in 1908. It was made of cellulose acetate and was invented as a replacement for dangerous nitrate film. Nitrate film was much tougher, slightly more transparent, and cheaper and because of that “safety film” didn’t completely replaced it until 1951.

In photography analogor in analog camera, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject appear darkest and the darkest areas appear lightest. This reversed order occurs because the extremely light-sensitive chemicals a camera film must use to capture an image quickly enough for ordinary picture-taking are darkened, rather than bleached, by exposure to light and subsequent photographic processing.