Daguerre invented photography using asphalt method.

Photography invented by Daguerre uses the silver salt method.

Daguerre photography is a photographic method, also known as silver plate photography. It was invented by the French painter Daguerre. It is the first successful photography method in the world. It was invented by the French painter Daguerre. 1838, French painters were studying the method of preserving images on objects, but after studying for a long time, they still found nothing.

Suddenly one day, he found an image left on the object. So he removed the nearby chemicals one by one to see what caused this phenomenon. Finally, he found that the great hero turned out to be the mercury left after a thermometer broke.

Photography was born. It can be said that iron shoes are nowhere to be found, and they can be obtained as easy as blowing off dust. Also known as silver plate photography. /kloc-in the middle of the 0/9th century, this photography method was mainly used for portrait photography, and was later replaced by wet crochet photography.

Daguerre silver plate photography is to expose the steel plate plated with silver iodide in a black box, then develop it with mercury vapor, and then fix it with salt. The obtained image is actually a metal positive image, but it is very clear and can be preserved permanently.

Because exposure takes about 20 to 30 minutes, early photography often takes still life, scenery, portraits and so on. Because of the long exposure time, the photographer needs to sit in a special seat with head support when shooting portraits.