Another reviewer tried to describe the techniques used in this film.
Nightangel is available on DVD from the National Film Board of Canada on a compilation of Jacques Drouin's works. Also featured on the disc is a short documentary that shows the filming of the seminal "Le Paysagiste" that uses the pin board technique in a superlative way.
The Pin board is a frame by frame animation technique in which hundreds of thousands in tiny nails or pins are planted into holes and pushed in or pulled out in order to create a shadowed image.
Bretislave Pojar served an apprenticeship with the great Czech animator Jiri Trnka before emigrating to Canada and becoming one of the great NFB animation artists.
Nightangel is a meeting of the great 3d puppet animation of Pojar and the pinboard animation of Drouin.