What does the invention of the camera show?

2/kloc-in the middle of the 20th century, Italian painters invented a "camera box" based on the principle of "pinhole imaging". Famous painter da? Finch wrote it down in his notes. He wrote: the light passes through a small hole in the darkroom wall and forms a reflection on the opposite wall. Of course, it can only be projected, and the projected image should be described with a pen.

Then, someone improved the "photographic black box". For example, adding a concave lens makes the inverted image become an upright image, which looks much more comfortable; Adding a flat mirror with a 45-degree angle makes the picture clearer and more realistic ... At this time, although the "camera box" has some characteristics of a camera, it can't be called a camera because it can't record images.

At the beginning of the 20th century, people discovered photosensitive materials, especially silver iodide discovered by Daguerre, which seemed to inject an extremely effective catalyst into the camera. Thus, the first real camera in human history was born, and Daguerre's silver plate was put on the "camera box".

The advent of the camera caused a sensation in the world. Many senior officials asked to take photos, although taking photos at that time was like being punished.

Early cameras were bulky and inconvenient to carry. In order to choose good weather for taking pictures (because electric light was not invented at that time), the photographer must sit in front of the camera for about half an hour at noon on a sunny day. The pampered lords and ladies had to endure this pain patiently in order to keep their looks in the world forever.

The emergence of new things will certainly have a certain impact on the world. At the beginning of the camera's birth, there was an episode: a group of painters in Paris who made a living by painting portraits jointly wrote to the French government, demanding that photography be banned. Their reason is simple: they are afraid that photographers will take their jobs.

However, no force can resist the growth of new things. Soon, with the development of photosensitive technology, the exposure time is greatly shortened and the camera becomes more practical.

1998, the pistol rubber camera was invented by Skoff in Britain. Because the lens has a large effective aperture, you can shoot as long as you pull the trigger.

What's interesting is. Once, Queen Victoria held a grand banquet at the court. When Skov pointed the camera at the Queen to take pictures, he was thrown down by the swarming guards, and the order of the venue was chaotic for a while. Afterwards, the guards realized that the "murder weapon" turned out to be a camera.

After that, with the further development of photosensitive materials and photography technology, the camera has been continuously improved.

Rand and Polkin invented a new camera in 1920. This kind of camera can "image at once".

Specifically, after the shooting is completed, it takes only a few tens of seconds, and a photo will slowly "spit out" from the camera.