The history of camera development

1550, Italian cardano put the lenticular lens in the original pinhole position, and the image effect is brighter and clearer than the black box.

1822, the Frenchman Niepce made the world's first photo on the photosensitive material, but the image was not clear and needed eight hours of exposure. In 1826, he took a photo through a black box on the tin floor coated with photosensitive asphalt.

1839, Frenchman 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 to control the exposure time for up to 30 minutes, so that a clear image can 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 box camera with film.

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 (predecessor of Leica), Lulai and Zeiss developed and produced small dual-lens and single-lens reflex cameras with aluminum alloy bodies.

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.

1960, Pentax introduced the Pentax SP camera, which pioneered the TTL automatic metering technology of the camera.

197 1 year, Pentax applied for the patent of SMC coating technology, and used SMC technology to develop and produce SMC lens, which greatly improved the color reproduction and brightness of the lens, eliminated glare and ghost, and significantly improved the quality of the lens.

From 65438 to 0969, CCD chip was used as the photographic sensitive material in the camera carried on the Apollo moon landing spacecraft in the United States, which laid a technical foundation for the electronization of photographic sensitive materials.

198 1 year, after years of research, Sony made the world's first camera with CCD electronic sensor as photosensitive material, which laid the foundation for electronic sensor to replace film.

Followed by Panasonic, Copa, Fuji, and some electronic chip manufacturers in the United States and Europe have invested in the technical research and development of CCD chips, laying a technical foundation for the development of digital cameras. 1987, Casio company gave birth to a camera with CMOS chip as photosensitive material.

Advantages and disadvantages of extended data camera;

First, advantages

1. You can see the picture immediately after taking a picture, which provides the possibility of remaking the dissatisfied work immediately and reduces the occurrence of regrets.

Just pay for those photos you want to develop, and other unnecessary photos can be deleted.

3. Color reproduction and color range no longer depend on the quality of the film.

4, the sensitivity is no longer fixed by the film, and the photoelectric conversion chip can provide a variety of sensitivity choices.

5, the product structure is relatively simple, the appearance is more exquisite, and the product is more and more portable.

6. The digital camera is simple, clear and easy to use.

Second, shortcomings.

1. Due to the conversion between imaging elements and image processing chips, the imaging quality is less layered than that of optical cameras.

2. Due to the different technologies of image processing chips from different manufacturers, the colors of the imaged photos are different from the real ones.

3. Due to the lack of core technology in China, the later use and maintenance costs are high.

Baidu encyclopedia-camera