Revisting Wet Plate Collodion Photographs
Wet plate collodion as a technique was first introduced in 1851 by the Englishman Frederick Scott Archer. This process consists of coating a plate with collodion, that is sensitised in silver nitrate; you then expose the plate, still wet, develop it and fix it. It is imperative to go through the whole process while the plate is still wet, as once the collodion film has dried it will no longer react to the solutions; The result is a negative image on a glass plate that when backed with a dark background forms what we call an Ambrotype, Greek for immortal. The aesthetic that emerges from this process is timeless with an ethereal quality; each plate is non-replicable
More on this by the Photographer Jacqueline Roberts at:
http://www.featureshoot.com/2016/09/wet-plate-collodion-portraits-that-will-make-you-lose-sense-of-space-and-time/
And a collection of his photos at:
https://www.google.com/search?hl=en&site=imghp&tbm=isch&source=hp&biw=1014&bih=489&q=Jacqueline+Roberts+wet+plate+collodion&oq=Jacqueline+Roberts+wet+plate+collodion&gs_l=img.12...2252.51547.0.54794.30.30.0.0.0.0.179.3009.0j22.22.0....0...1.1j2.64.img..8.2.288.0..0j0i24k1j0i30k1.MOMIksu5Dhc