How was the camera invented?

Mankind has entered the era of precision.

-1830 the invention of the camera rarely finds inventions with so many uses as photography. In addition to daily life, it is also widely used in education, scientific research, medicine, information, media and other fields, which makes us have endless reverie when recalling the past. If we put our souvenirs together, we will find that photos account for a considerable proportion.

In 1930s, louis Daguerre successfully invented a practical technology-photography. There is still a tortuous experience about its invention.

Daguerre was born in Cambre in the north of France on 1787. He was an artist when he was young. In his thirties, he designed a "peep show", which is a panoramic picture displayed with special lighting effects. When he was engaged in this work, he became interested in developing a machine that can automatically reproduce world scenes without brushes and pigments. From then on, he began to try to develop a camera.

At first, his efforts to design practical cameras failed. He met Nieps at 1827. It is possible that Nipps was also trying to invent a camera at that time (at that time, he had achieved some success). Two years later, they became partners. 1833 Niepce died, and Daguerre continued this effort alone. By 1837, he had successfully invented a practical photographic system called Daguerre photography.

1839, Daguerre announced his photography process to the public, but did not apply for a patent. In return, the French government awarded Nipps's son and Daguerre a life annuity. The announcement of Daguerre's invention caused a great sensation among the public. He became a hero at that time and won many honors. At the same time, Daguerre photography has been widely used. Shortly after his retirement, Daguerre died in a country house not far from Paris in 185 1.

No invention is entirely due to one's own work. In fact, before Daguerre, many other jobs prepared for the success of Daguerre. Black box (a device similar to pinhole imaging camera, but without negative film) is at least 800 years earlier than Daguerre's invention. /kloc-In the 6th century, cardano took an important step in how to mount the lens on the hole of the camera box, which opened an exciting prelude to modern cameras. But because the images it produces can't be saved at all, it can hardly be considered as a camera. Another important preliminary discovery was made by Schultz in 1727. He found that silver salt is very sensitive to light. Although he used this discovery to create some temporary images, Schultz did not really study this phenomenon in depth.

The forerunner closest to Daguerre's achievement was Nipps, who later became the partner of this Gail. 1820 or so, Nipps found that the asphalt produced in Judea (ancient southern Palestinian area) was very sensitive to light. By combining this photosensitive material with the camera case, Nipps successfully manufactured the world's first camera (a camera he made in 1826 is still preserved today). It is for this reason that some people think that Nipps is the inventor of the camera, but Nipps's photography method is totally impractical and requires eight hours of exposure time. Even so, it still gets a rather blurred image.

With Daguerre method, the image is recorded on the negative coated with silver iodide, and the exposure time of 15 to 20 minutes is enough. In this way, although this method is still very troublesome, it is very practical. Two years after Daguerre made his method public, others made some minor improvements: silver bromide was added to silver iodide used as a photosensitive material. This slight change has played an important role, greatly reducing the necessary exposure time, thus making it feasible to produce images by photography.

1839, shortly after Daguerre announced his invention, British scientist Talbot announced that he had invented a different photographic method. In the same way as we do, it uses negative film. An interesting record shows that Talbot actually made his first photo in 1835, which was two years earlier than Daguerre's photography. Talbot is engaged in several other research work at the same time, but he can't carry out his photography experiment quickly.

Daguerre died, and Daguerre's very popular invention played a great role in promoting the development of history in the future. People's research on cameras has not stopped because of this. Talbot, an Englishman, invented "Talbot photography" at the same time as he invented the silver disk camera, so that a negative can obtain multiple photos. Decades have passed, and Americans have caught up. George eastman of the United States invented the film, which made preparations for reducing the cost of photography and entering thousands of households. 189 1 year, the price of the camera makes it affordable for many people and becomes a simple and popular entertainment tool in the family.

Later, people began to be dissatisfied with the original black-and-white photos. They needed a higher level of photography technology and hoped that the photos could fully show all the colors of life. So color photography technology came into being. Besides being used for family entertainment, it has gradually expanded to various fields such as scientific research, industry, military, medicine and commerce, thus promoting the development of these industries.