How many movies have Erdoğan Engin and Osman F. Seden collaborated on?

They have worked on 6 movies together! Their first movie together was Güler misin Ağlar mısın (1975) while their highest rated movie together was Love of Giant (1976). They have not worked together since Vazgeç Gönlüm (1980). They are most known for their drama films together.