 The scene where six members of the DAscoynes family, all played by  Alec Guinness (qv), are seen together took two days to film. The  camera was set on a specially built platform to minimize movement.  In addition, the camera operator spent the night with the camera to  ensure that nothing moved it by accident. A frame with six black  matte painted optical flat glass windows was set in front of the  camera and the windows opened one at a time so each of the  characters could be filmed in turn. The film was then wound back for  the next character. Most of the time was spent waiting for Guinness  to be made up as the next character.