Willian Henry Fox Talbot ( 1800 – 1877 )
English researcher,in parallel to Niépce and Daguerre, and with a huge scientific training, Henry Foz Talbot invented another way of taking pictures: The Calotype.
With this method he could obtained many copies of each negative. The images were less sharp and they lacked of the daguerreotype gray scales, but the calotype was cheaper, easier to use and it required a shorter time of exposure (only 30 seconds).
He published the first illustrated book of photos "The pencil of natura, 1844".
"The Ladder"
"The Haystack"
"The Broom"
"Ships at low tide"