Career
The first feature Ahlberg directed was the Danish erotic classic I a Woman (Denmark, 1965) which went on to international success, especially in the United States. He quickly became identified with erotic fare, directing two sequels to I, a Woman as well as a Swedish version of Fanny Hill (Sweden, 1968), starring Diana Kjær and Oscar Ljung. During the 1970s, he developed a conspicuous collaboration with actress Marie Forså.
Ahlberg moved to the United States in the late 1970s and worked mostly as a cinematographer on American productions.
He was frequently hired by producer Charles Band. Ahlberg died from complications of congestive heart failure on 26 October, 2012.
He was 81.