The former is credited with the invention of the calotype ; the latter with the daguerreotype.
A year later William Henry Fox Talbot, the inventor of the calotype process, the forerunner of photography as we know it today, made a series of representations of city views and buildings.
These experiments led him to develop the calotype process, and the production, in 1835, of the first ever negative, a picture of the Oriel window at Lacock.
