How many movies have Mikko Niskanen and Pirjo Leppänen collaborated on?

They have worked on 3 movies together! Their first movie together was Syksyllä kaikki on toisin (1978) while their highest rated movie together was Elämän vonkamies (1986). They have not worked together since Nuoruuteni savotat (1988). They are most known for their drama films together.