The Mime Troupe Frame Story Blow-Up (1966)
The mimes are the film's structural envelope
The Rag-Week mimes appear in the first three minutes and the last six. Between those two appearances, they vanish completely from the film. Their bracketing is not commentary — it is the structural device that converts the film's question into a literal stage direction at the climax.b1 b2 b42 b43 b44 b45
What Rag Week actually was
The "Rag Week" the mimes are participating in is the British university tradition in which students in costume raise money for charity through stunts, parades, and performances. The tradition was at its mid-1960s peak; Rag Weeks were a recognized part of the academic calendar at Oxford, Cambridge, and the major civic universities. The students wear white face-paint and clown costumes in the opening; in the climax they have changed into tennis whites. The framing device makes them readable as a real social phenomenon, not as Antonioni's metaphysical invention. (propellermag, idyllopus)
"Rag Week was a real thing. The students really did this. Antonioni did not invent the troupe — he found them and used them as the bracket of his film." — propellermag, Blow-Up is more relevant now than it was in 1966 (2018)
How the opening uses them
The film opens on a jeep of mimes cavorting through the empty London streets at dawn, shouting demands for charity money to passersby. They are the first thing the audience sees. They are intercut with the doss-house dawn — the row of haggard men filing out from the railway arch, one of whom is Thomas. Antonioni shoots the two openings as a single rhyme: two groups of people in costume at dawn, one in clown white-face, one in working-class disguise.b1
The two openings collide at minute 3, when Thomas's Rolls passes the mimes' jeep. He hands them some bills. They register him; he does not yet register them. The structural seed is planted: the mimes will return at the climax, and Thomas will need them then.b2
Why the mimes vanish for two hours
Between minute 3 and minute 108, the mimes are not on screen. The film does not show them moving through the city in the background; it does not cut to them between scenes; it does not foreshadow their return. The choice is structural: the audience must come back to them at the climax with the same quality of unfamiliarity Thomas does.
"The mimes are gone for the entire body of the film. The audience has forgotten them by minute 30. When they come back at the tennis court, the audience experiences exactly what Thomas experiences — recognition without explanation." — Roger Ebert, RogerEbert.com (1998)
How the climax uses them
The Rag-Week jeep pulls up at Maryon Park at dawn. The mimes pour out in tennis whites and set up an imaginary court — no rackets, no ball. The volley begins. The imagined ball clears the wire fence and lands in the grass at Thomas's feet. The mimes wait. He throws it back. The soundtrack supplies the thock. The camera pulls back. He becomes small, then very small, then is gone. (See The Mime Tennis Match.)
The mimes do not speak in the climax. They do not look at Thomas. They do not invite him with any explicit gesture beyond the volley itself and the waiting after the ball lands. The structure is exactly what the film needs: the mimes hand Thomas a problem, the problem has a definite right answer, the right answer is to throw the ball back, and the consequence of throwing it is the soundtrack supplying the thock and the camera pulling back.
"The mimes are not magical. They are not ghosts. They are not metaphors. They are the actors who hand the protagonist his test." — Senses of Cinema, Blow-Up review (2017)
The frame story as Antonioni's solution to a structural problem
Blow-Up's plot is a procedural thriller (photograph, enlargement, body, witness report, refusal). The film's argument is philosophical (reality as consensual performance, the medium's relation to evidence, the verdict on the post-midpoint approach). The mime frame story is Antonioni's solution to the structural problem of bringing the philosophical argument to a definite climax inside a procedural thriller.
The procedural thriller's natural climax — Thomas filing the report and the world believing or refusing — is the wrong climax for the philosophical argument. The philosophical argument needs a climax in which Thomas is tested on his ability to act inside a consensual performance. The mimes are the staged-performance environment the test requires. Antonioni does not need to invent the test as a metaphysical event because Rag Week is a real social institution that already does staged performance for an audience.
"The mime troupe is the structural device that lets Antonioni close his film. Without the troupe, there is no climax. With the troupe, the climax is the only thing it could be." — Idyllopus Press: Blow-Up Part Four, idyllopuspress (2018)
The Chagrin family
The lead mime players are credited as Julian Chagrin and Claude Chagrin (later Claude Whatham, the director's wife). Both are mime artists trained at Jacques Lecoq's school in Paris. Lecoq's pedagogy — body-as-instrument, imagined-object work, the silent volley as a fundamental teaching exercise — is directly visible in the climactic match. Antonioni rehearsed the troupe at Maryon Park for two weeks before shooting. (See The Mime Tennis Match for the Chagrin material.)