Throughout the English Channel, William Fox Talbot had earlier identified another answer to a silver process picture but had kept it secret. Seeing regarding Daguerre's invention Talbot processed his procedure, to ensure that it could be fast enough to consider photographs of men and women as Daguerre had done by 1840 he invented the collotype process. He coated paper sheets along with silver chloride to create an intermediate negative image. Not like a daguerreotype a collotype negative could be utilized to reproduce positive prints, similar to chemical films do today. Talbot patented this procedure which greatly limited its adoption.
He spent the remainder of his life in lawsuits defending the patent until finally he gave up on photography altogether. However later this procedure was refined by George Eastman and is also today the fundamental technology used by chemical film cameras. Hippolyte Bayard also designed a method of photography but delayed announcing it, so had not been
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