My friend Blake Wylie has been doing some amazing photography using a 160-year-old process called “ambrotype.”An ambrotype is a photograph that creates a positive image on a sheet of glass using the wet plate collodion process. That’s Blake in an ambrotype self-portrait made by photographing himself in a mirror, with a 12-second exposure. Check out his work – whether ambrotypes or modern digital images – at on Flickr.