Sultan became widely known for Pictures from Home, a long-term project about his parents. Over several years, he photographed them in their house, recorded conversations, and collected family memories. The project became more than a family album—it was a thoughtful look at aging, memory, and the roles people play within a family.
In the late 1990s, Sultan turned his attention to California's San Fernando Valley. His series The Valley was made on the sets of adult films, but instead of photographing explicit scenes, he focused on the moments between filming. Empty living rooms, actors waiting, and film crews at work revealed how ordinary suburban houses could temporarily become movie sets.