What does Dalgai’s flag mean?

Dalguer's flag has two meanings:

1. Dalguer's flag means: Daguerreotype photography is also known as "daguerreotype photography". It was pioneered by the Frenchman Daguerre.

There is a photography art display module on a certain website that is very popular among otakus, called Daguerre’s Flag. This module is actually to commemorate a great artist, a pioneer of photography art, Daguerre. Gayle.

One day in January 1839, a group of senior figures from the French Academy of Sciences and Arts came to the workshop of an elderly man. Every visitor was quite curious, they wanted to see the trick that Daguerre was about to perform.

Daguerre carefully held a copper plate in his hand. The surface of the copper plate was coated with a thin layer of silver. After he put the whole piece into a basin filled with iodine solution, he took it out and exposed it for 30 seconds. minute. Next, he transferred the copper plate into a camera obscura and photographed several still life objects on the table in the camera obscura. This process also took about 30 minutes.

After that, he slowly covered the copper plate with mercury vapor at 75°C. Soon the silver and mercury became amalgamated. After the final fixation with salt water, he finally came to witness A moment of wonder. A picture gradually formed on the copper plate, which was the still life just taken!

Although this picture can only be seen from a specific angle and must be sealed in a glass box to maintain it, it is still an epoch-making breakthrough. Later film photography was developed through the research of generations of photographers.

2. The title Daguerre’s Flag is an affirmation of Daguerre’s contribution, especially his achievements in photography technology, which greatly changed human life.

When he was young, Daguerre made many efforts to invent a usable camera, but still failed. Until he met Joseph Nicephore Niépce in 1827, Niépce had been working hard to invent the camera and achieved success. Two years later, the two began to cooperate and became a couple with the same hobby. Partners.