The Age of Invention of Automatic Film Camera

1822, a Frenchman, Niepce, made the world's first photo on a photosensitive material, but the image was not clear and required eight hours of exposure.

In 1826, he took a photo through a black box on the tin floor coated with photosensitive asphalt.

1839, Daguerre made the first practical silver camera, which consisted of two wooden cases. One wooden box is inserted into another to focus, and the lens cover is used as a shutter. Only by controlling the exposure time for 30 minutes can a clear image be taken.

184 1 year, optician Vogeland invented the first all-metal camera. The camera is equipped with the world's first photographic lens with the maximum phase aperture of 1: 3.4 designed by mathematical calculation.

1845, German von Martens invented the world's first 150 turning point. 1849, Davie-Blue Scott invented a stereo camera and a two-lens stereo observation mirror. 186 1 year, physicist Maxwell invented the world's first color photo.

1860, Sutton, England designed the first single-lens reflex camera with a rotatable viewfinder. 1862, Detrie, a Frenchman, stacked two cameras together, one for taking pictures and the other for taking pictures, forming the prototype of a dual-lens camera. 1880, Baker of England made a double-lens reflex camera.

1866, German chemist Short and optical scientist Arjun invented barium crown optical glass in Zeiss Company and produced positive photographic lens, which made the design and manufacture of photographic lens develop rapidly. 1888 Kodak company produced a new type of photosensitive material-soft and windable "film". This is a leap in photosensitive materials. In the same year, Kodak invented the world's first portable square camera with film. With the development of photosensitive materials, a dry plate coated with silver bromide photosensitive materials appeared in 187 1 year, and a film based on nitrocellulose (Cello camera) appeared in 1884.

1906 American George hillas used the flashlight for the first time. 19 13 german oskar barnack developed the world's first 135 camera.

From 1839 to 1924, in the first stage of the development of this camera, some novel cameras such as buttons and pistols also appeared.

From 1925 to 1938 is the second stage of camera development. During this period, German companies such as Leeds, Lorelei and Zeiss developed and produced dual-lens and single-lens reflex cameras with small volume and aluminum alloy body.

With the appearance of magnifying technology and particle film, the quality of lens has been improved accordingly. In 1902, Rudolf made a famous "Tiansai" lens by using the third-order aberration theory established by Cedell in 1855 and the high refractive index and low dispersion optical glass successfully researched by Abbe in188/0/year. Due to the reduction of various aberrations, the imaging quality is greatly improved. On this basis, in 19 13, a small Lycra camera with 35 mm film punched in the negative was designed and manufactured in Barnach, Germany.

However, all the 35 mm cameras in this period used perspective viewfinders without rangefinders. 1930 to make color film; 193 1 Germany Contex camera has been equipped with a double-image coincidence rangefinder based on the principle of triangular ranging, which improves the focusing accuracy, and adopts aluminum alloy die-casting body and metal curtain shutter for the first time.

1935, a single-lens reflex camera of Ek Saquetoux appeared in Germany, making it easier to focus and change lenses. In order to make the camera exposure accurate, Kodak camera began to install selenium photocell exposure meter at 1938. 1947, Germany began to produce Contax S five-prism single-lens reflex camera, which made the viewfinder image no longer upside down, and changed the top view to head-up focusing framing, making photography more convenient.

1956, the Federal Republic of Germany first manufactured an electric eye camera with automatic exposure control; After 1960, cameras began to adopt electronic technology, and many forms of automatic exposure and electronic program shutters appeared; 1975, the operation of the camera began to be automated.

The above is taken from Baidu Encyclopedia-Camera.