Ehrin has been based in Hanoi, Vietnam since 2006. He was born in the Netherlands to a Dutch mother and an American father. As a teen, his mother took him to the Middle East and Europe and opened his eyes to the world. After graduating from the University of Florida he set out to discover more. Ehrin lived and worked in New Zealand for a year and then traveled through Asia and eventually decided to live there.

He has won multiple international awards for his photography and films from NPPA Best of Photojournalism, Photophilanthropy, Visual Cultural Awards, Lucie Awards and the PX3 Prix De La Photographie Paris.