Visually, Renoir uses his signature deep focus and fluid camera movements to contrast the cramped, vertical spaces of the Parisian apartment with the horizontal, open freedom of the river. The film suggests that "salvation" is a matter of perspective. While Lestingois believes he saved Boudu from death, he actually attempted to kill Boudu’s spirit by trapping him in a domestic cage.
The film’s climax is both a comedic punchline and a philosophical statement. After being groomed and pressured into a marriage that would officially "integrate" him into society, Boudu tips over a boat during the wedding party. He drifts downstream, sheds his fancy clothes, and returns to the life of a tramp. He chooses the uncertainty of the road over the comfort of a prison. Visually, Renoir uses his signature deep focus and
Ultimately, Boudu Saved from Drowning is a celebration of the uncontainable. It argues that true freedom cannot coexist with social expectations. By the end, the status quo is restored for the Lestingois family, but the audience is left with the haunting realization that the "civilized" world is the one that is truly drowning, while the tramp is the only one who knows how to swim. The film’s climax is both a comedic punchline