Wetplate collodion - ambrotype and negatives
The moment Talbot invented his paper negatives, research started for a substrate to replace paper and eliminate its obvious drawbacks. Though attention was immediately directed towards glass, it was only some years later that a truly successful process appeared and it was…. the wetplate colodion, a process capable not only of producing reasonably fast (by the standards of the day) plates for making negatives, but also of creating the magical, silvery ambrotypes so popular even today.