English pioneer of photography. He invented the paper-based calotype process, patented in 1841, which was the first negative/positive method. Talbot made photograms several years before Louis Daguerre's invention was announced Found on https://www.encyclo.co.uk/local/21221
English pioneer of photography. He invented the paper-based calotype process, patented in 1841, which was the first negative/positive method. Talbot made photograms several years before Louis Daguerre's invention was announced