Was photography invented by combining camera obscura with chemically sensitive materials?

Today, with the development of science and technology, photography has become an indispensable mass entertainment activity in life.

But you know what? All this was unimaginable for people in the last century. At that time, people had to rely on the painter's pen to leave their own appearance.

It took a long time for human beings to understand the functions of light and shadow, and to record and reproduce them.

In ancient China, the research level in this field was ahead of other countries. As one of the theoretical foundations of the formation and development of modern photography technology, the principle of pinhole imaging was recorded as early as 2400 years ago in China's book Mo Jing during the Warring States Period. During the period of1661~1721,China was able to manufacture black boxes for painting or viewing with imaging lenses. Chen Wenshu in the Qing Dynasty vividly described this: "On the mirror box of a thousand-mile mirror, you can take pictures of the scenery from the beginning of the day, and you can take pictures on it, which is lifelike." At the same time, someone abroad invented a camera box, which is very close to today's cameras. It can be seen that in the middle of17th century, the development of optical machinery has reached a considerable level, but the development of photography has temporarily stopped due to the backwardness of photosensitive chemistry.

/kloc-in the 0/8th century, people accidentally discovered the photosensitive characteristics of silver salt, but failed to connect it with photography, so the printed image of the experiment could not be saved and would soon disappear.

It was not until 1826 that human beings first combined black boxes with chemical photosensitive materials and really invented photography. This is the real beginning of photography history.

[I still want to know]

The black box can protect the film from other light, and only the images gathered by the lens can be sensitive to the film.

Color sensitivity of film refers to the sensitivity of film to various colors.