He often photographs during the night; darkness and silence are recurring themes in his work. For his series Nyctalope (2005), a word describing animals that can see in the dark, the photographer took pictures of forests at night, using his car lights to create a dramatic clair obscur. For his series Ahmedabad (2005-2006), Delangle traveled to the city of Ahmedabad in the northern part of India to photograph its empty streets at night.