The secrets behind a creepy photographic technique
In the 1960s, a French artist named Jean-Pierre Sudre began experimenting with an obscure 19th-century photographic process, creating dramatic black-and-white photographs with ethereal veiling effects. Since then, other photographers have used and refined it to create unique works of art. Now, researchers have unveiled the mysterious chemistry behind the process.
Read Original Article: The secrets behind a creepy photographic technique »
