The Tate Britain in London is holding an exhibition on Francis Firth Photographs.
Firth (1822-1898) made several trips to Egypt and to the Near East and was one of the first to experiment with glass negatives.
"The photographs displayed here are not enlarged, but the actual size of the glass plates from which they were printed. This allowed him to capture both the expanse and the detail of Eastern subjects. Each photograph took a few minutes to create, eliminating temporary and moving things. Frith prepared and fixed the photographs in a tent or ancient tomb, despite the danger of using explosive materials such as liquid ether and gun cotton in the desert heat".
Focus: Francis Frith Photographs
For a great website that has many of Frith's photos, click here