The creation of a painting by Francis Savel (aka Dietrich de Velsa, director of Équation à un inconnu) in his studio in Montmartre: the white canvas, the tests in charcoal, the drawing, the arrival of color. Outside it is winter.
| Production | Alain Delon | Producer |
| Production | Georges Beaume | Producer |
| Directing | Guy Gilles | Director |
| Crew | Makp Kazan | Cinematography |
| Sound | Jacques Loussier | Music |
| Camera | Guy Gilles | Camera Operator |