Final answer:
William Henry Fox Talbot pioneered the negative-positive development process in photography, revolutionizing the medium with his calotype method.
Explanation:
William Henry Fox Talbot was the first to originate a negative-positive development process in photography. This process involved creating a negative image on a transparent paper base, which was then used to produce multiple positive prints, setting the standard for the new medium. Talbot's calotype method allowed for the reproduction of images and eventually became the dominant process in photography.
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