What is the development history of cameras?

/kloc-At the beginning of the 6th century, Italian painters invented a "camera box" based on the principle of "pinhole imaging". Famous painter da? Finch also recorded it 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. ...

However, at this time, the "camera box" can only image, but it can't record images.

/kloc-In the middle of the 0/8th century, people discovered photosensitive materials, especially silver iodide in Daguerre. So, put a silver plate on the "photographic black box" and the image will be recorded. Since then, the first real camera in human history was born.

The camera was very big at first. Like a big wooden box. In the late 1920s, German companies such as Leeds, Lorelei and Zeiss developed SLR cameras with small volume and aluminum alloy body. At this time, the performance of the camera is gradually improved and perfected, optical viewfinder, rangefinder and self-timer are widely used, and the adjustment range of mechanical shutter is constantly expanding. The camera manufacturing industry began to mass-produce cameras, and camera manufacturers all over the world copied Leica and Lorelei cameras. The sensitivity, resolution and latitude of black-and-white photographic film have been continuously improved, and color photographic film has been popularized. More and more people are becoming professional photographers. They travel with cameras and appear all over the world, including scenic spots with infinite beauty and battlefields with shrapnel flying everywhere. Kappa, a famous Hungarian war correspondent, once said, "The camera itself can't stop the war, but it can expose it." . He is an enthusiastic photographer. During World War II, he often traveled around the world with a Leica camera made in Germany. Even if he died in battle, his last action was to press the shutter of the camera.