For the past several years, photographer, screenwriter, and author Bill Wittliff has been placing photographic paper inside beer cans, tubes made of PVC, and other cylindrical containers and affixing them to posts, trees, and other vertical supports on his Plum Creek Ranch near Luling, Texas. Wittliff pokes pinholes in the containers and allows the sun to "paint" on the paper over periods that can last anywhere from a few days to a year. The resulting...