What is the method of photography in Daguerre?

Daguerre photography is also called "silver photography". It was originally created by Daguerre, a Frenchman. /kloc-0 was published in the world on October 7th, and used around 1839 and 1860. This is the earliest photography method with practical value in the history of photography. This is a direct positive method that appears on silver-plated copper plates and cannot be printed and reproduced.

The basic method is to plate silver on the polished copper plate and smoke the silver surface with iodine vapor to produce photosensitive silver iodide. Put this photosensitive silver plate in the cassette for later use. When shooting, this kind of silver disk is put into a square box camera with a lens aperture of F3.6, and the exposure time is about 1 minute. After shooting and exposure, the silver surface was developed by mercury vapor fumigation.

In the light-receiving part of the silver plate, mercury and silver form a shiny amalgam, forming a bright part of the image. The unexposed part of the silver plate has no amalgam and still exists in the form of silver iodide. After development, the silver plate was fixed by baking soda solution, and silver iodide dissolved, showing a black copper plate, which constituted the dark part of the image.

Daguerre characters introduction:

Louis Daguerre, whose full name is Louis Jacques Mande Daguerre, was born in Comey, France, and is a French inventor, artist, chemist and photographer. 1826, Nieps successfully took the first photo in the world. 1827, Daguerre met Nipps, 1829, and they started to cooperate. 1837 successfully realized a new photography technology.

1839, Daguerre developed and exposed the silver salt coating with mercury vapor, and successfully invented Daguerre photography, also known as silver plate photography. Proof of the photographic invention of A Corner of the Studio. The corner of the studio shot by Daguerre with a silver-plated copper plate was collected by the French Photographers Association in Paris as a proof of the invention of photography.

As the founder of photography, Daguerre's own photography works are not many, but from the existing pictures, we can see his superb painting skills and extraordinary research and original spirit.