The background became black, and the topic was rendered in gradations of grey. From the paper unfavorable, Talbot made contact prints, reversing the light and shadows to create a detailed image. In 1841, he perfected this paper-negative process and referred to as it a calotype, Greek for “stunning image Photograpy News.” Daguerre’s daguerreotype process started by fixing the images onto a sheet of silver-plated copper. He then polished the silver and coated it in iodine, creating a surface that was sensitive to gentle. Then he put the plate in a camera and exposed it for a few minutes.
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