Tilt Gallery Mark Osterman and France Scully Osterman made negatives of landscapes while traveling through Ireland, northern Spain, Japan and the U.S. over the past 10 years. They used vintage equipment and a portable darkroom to make wet-plate collodion negatives on glass plates. The split-toned prints from these negatives are made on 16" x 20" silver gelatin paper, a synergy of old and new technologies.