Ludwig returned full time to photography in the 1970s and 80s, creating such series as "Reflections out of Time," "Graffiti," and "Base Metals," shown in solo and group exhibitions across the US and abroad. Beginning in the 1980s his collaboration with
Gwen Akin resulted in the photographic partnership of Akin-Ludwig. With Akin, he worked in the platinum-palladium medium, exploring the theme of the grotesque and the aesthetic created as the subjects of the photographs contrasted with the beauty of the printing process. Together they also created "The Large Cibachrome Landscapes and Seascapes Series" and "The Women Series," also in platinum-palladium. His long-standing interest in valorizing vernacular vocabularies of art moved him to become an early follower and documentarian of street art and
graffiti as art forms of the people, especially as it was developing in his downtown NYC neighborhood. Later in life, he photographed
street art and
graffiti, which he admired as an international art movement that he compared to
pop art. These photographs were sometimes created under the pseudonym Elisha Cook, Jr. ==Personal life and death==