Lancelot du Lac is a 1974 film that was written and directed by Robert Bresson. It relates the story of Lancelot and Guineveres love as Camelot and the Round Table fall apart. It is based on Arthurian legend and medieval romances, especially the LancelotGrail cycle, and the works of Chrtien de Troyes.
King Arthur has sent out 100 knights to retrieve the Holy Grail. Arthur is dismayed when it turns out that the mission was futile and 70 knights have died in its course. Among those who have returned is the Queens lover Lancelot. Soon Lancelot again takes part in a tournament. There he gets injured. While Lancelot seeks recovery in his own castle, Arthur learns about his wifes affair and, heavily agitated by Mordred, he puts Queen Guinevre in prison. With Lancelots help she breaks out. Arthur starts immediately a campaign against the castle where the lovers were looking for shelter. During the siege Lancelot happens to kill his old mate Gawain. Driven by sorrow he tries to end the fight and wants to negotiate a treaty with King Arthur. When he witnesses how Mordred commits an attempt on Arthur he joins without hesitating the side of the king. In the end Arthur and Lancelot and all the other knights of the legendary round table are slaughtered.The film was shot from the end of June to the start of September 1973 in Noirmoutierenlle. It was shot onmm color film with an aspect ratio of 1.66 1. ........
Source: Wikipedia