In one flawless sequence, Griet is alone in Vermeer's studio and looks at the canvas he is working on, looks at what he is painting, looks back, looks forth, and then moves a chair away from a window. When he returns and sees what she has done, he studies the composition carefully and removes the chair from his painting. Eventually he has her move up to the attic, closer to his studio, where she can mix his paints, which she does very well.
And then of course they start sleeping together? Not in this movie. Vermeer has a rich patron named Van Ruijven (Tom Wilkinson). If Vermeer is too shy to reveal feelings for his maid, Van Ruijven is not. He wants a painting of the girl. This of course would be unacceptable to Catharina Vermeer, whose best-developed quality is her insecurity -- but it is not unacceptable to her mother, who must keep a rich patron happy. Thus Griet becomes a model.
There is a young man in the town, Pieter (Cillian Murphy), a butcher's apprentice, who is attracted to Griet. He would make her a good husband, in this world where status and opportunity are assigned by caste. Griet likes him. It's not that she likes Vermeer more; indeed, she's so intimidated she barely speaks to the artist. It's that -- well, Griet could never be a butcher, but she could be a painter.
Mankind has Shakespeares who were illiterate, Mozarts who never heard a note, painters who never touched a brush. Griet could be a painter. Whether a good or bad one, she will never know. Vermeer senses it. The moments of greatest intimacy between the simple peasant girl and the famous artist come when they sit side by side in wordless communication, mixing paints, both doing the same job, both understanding it.
Do not believe those who think this movie is about the "mystery" of the model, or Vermeer's sources of inspiration, or medieval gender roles, or whether the mother-in-law was the man in the family. A movie about those things would have been a bad movie. "Girl With a Pearl Earring" is about how they share a professional understanding that neither one has in any way with anyone else alive. I look at the painting and I realize that Griet is telling Vermeer, without using any words, "Well, if it were my painting, I'd have her stand like this."
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