Tony Donnelly
William- Henry Fox Talbot was the inventor of Photographic paper he used silver chloride, which he coated onto paper sheets, by exposing the coated paper to the light for extremely long lengths of time, meant he was able to produce negative images. Washing the images in a fixed chemical solution removed the light sensitive silver enabling the picture to be viewed in daylight without it developing further.
I believe this was the turning point of photography because by using this technique, which was called ‘Calotype’, meant that printing with negatives means an image could be reproduced however many times was needed. Unlike the Daguerreotype which is the opposite a single image process which is not reproducible.
Unfortunately ‘Calotype’ wasn’t all that good with the sharpness of an image unlike a metallic Daguerreotype, what Talbot needed was wet collodion process which allowed glass to be used as support without this his negative images were not defined enough, however in 1851 Daguerre died allowing this process to be used refining paper ‘Calotype’.
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