Nicéphore Niépce
He was a French inventor of photography. He produced the world's first known photograph in 1825.
He used the centuries-old method of pinhole camera to project light on copper plates that coasted wiyh sliver chloride. He invented photography, by noticing, exploiting and refining chemical reactions that caused by light to create permanent images. The world's earliest surviving photograph is an eight-hour exposure on a pewter plate. it was taken by Niépce in 1826 or 1827, showing the window view from his home.
Louis Daguerre
He was French artist and chemist. He was known by his invention of the daguerreotype process of photography.
After the first permanent photograph was made
, Niépce
and Daguerre refined the process. Daguerre first exposed copper copper coated by silver to iodine. Then he exposed the silver iodine to light for several minutes to amalgamate the mercury with the silver. And finally he fixed the image in salt water. This is the initial practice of the famous Daguerreotype.
Henry Fox Talbot
He was a British inventor of calotype process. He was the precursor to most photographic processes of the 19th and 20th centuries.
After Daguerre announced his discovery without details, Talbot showed his picture taken in five year ago. He communicated the technical details of his photogenic drawing process to the British Royal Society. His process reflected the work of many predecessors, such as John Herchel and Thomas Wedgwood. His contributions include the concept of negative and the use of gallic acid for developing the latent image.
Hill and Adamson
David Octavius Hill was a Scottish portrait painter. Robert Adamson, the brother of photographer John Adamson, was an engineer. They establish their four-year partnership as photographers in 1843. During their partnership, the pair made more than three thousand photographs, including landscapes and architectural studies. Their best-known works are their portraits. Hill and Adamson's portraits of working men and women from the fishing village of Newhaven, near Edinburgh, are among the earliest examples of social documentary photography.
