- Country: France
- Genres: Documentary, Short
- Release: 2011-01-05
- Director: Jean-Marie Straub
- Writers: Jean-Jacques Rousseau
- Language: French
- Stars: Jean-Marie Straub , Jean-Marie Straub
- Runtime: 1 min
- Awards: N/A
- AKA: Joachim Gatti, variation de lumière , Joachim Gatti, variation de lumière (France, French Republic)
- Plot:
In his one-minute film, Jean-Marie Straub presents a photograph of a young man - before a violent incident, unharmed - and accompanies it with the narration of a text by Jean-Jacques Rousseau.
- IMDB:tt1615011
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