Latticed window in Lacock Abbey, 1835.

This photograph taken by William Henry Fox Talbot (1800-1877) was made from the earliest camera negative. Lacock Abbey in Wiltshire, which now has a photography museum, was the Talbot family home. Talbot invented the first negative/positive process for producing photographs between 1835-39. Any number of prints could be made from the same shot by transferring the negative image on to special paper to make a positive print; these prints were called calotypes. Also shown is the camera which Talbot made in 1830.