What are the characteristics of Carlo photography?

Talbot is called "the father of modern photography" in Britain. He studied at Cambridge University in England, studied classical literature and mathematics, and obtained a master's degree in literature from 65438 to 0825. During his college years, he published articles on mathematics, astronomy and physics, and became a member of the Royal Academy of Sciences composed of British scientists on 1832.

Like Daguerre, Talbot has been experimenting with methods of recording images for many years. 1834, he coated paper with a layer of silver chloride, dried it, covered it with leaves and exposed it to the sun. As a result, like Wedgwood's "sunshine picture", all the uncovered parts turned black. However, he found two important improvement methods: 1. Immersing the exposed silver chloride paper in concentrated brine can prevent the image from further blackening;

2. Although the exposed image is a negative image (that is, the black part represents white and the white part represents black), a positive image can be displayed by printing this negative image on another photosensitive paper by light.

1835, Talbot took his first photographic paper negative, with an area of only 2.5 square centimeters.

It is said that Daguerre's photography method will be publicly announced in Paris, and Talbot is worried that his method is the same as that of Daguerre. So, 1839+65438125 October, he announced his negative image-positive image technology to the Royal College of England, and publicly showed his photos made by this photography method.

A year later, Talbot improved his photography skills. He used hypo solution instead of salt solution as fixing agent, changed silver chloride into silver iodide, and added developer. In this way, the exposure time is shortened and the image is stronger.

184 1 year, Talbot's improved negative-positive process was patented in Britain and named "Karo (Greek for beauty) photography". The following year, he won the Royal Academy Award for this invention.

Talbot developed the first stereo camera in 184 1 according to Wheatstone stereo mechanism and stereo principle. He also registered the patents of "photographic plate-making method" in 1852 and 1858, and used steel plates and gauze to print intermediate-tone photos on printing plates, becoming the pioneer of photo plate-making printing in180s.