How many movies have Berndt Lindahl and Erkki Karu collaborated on?

They have worked on 3 movies together! Their first movie together was Myrskyluodon kalastaja (1924) while their highest rated movie together was Muurmanin pakolaiset (1927). They have not worked together since Tukkipojan morsian (1931). They are most known for their drama films together.