Restored Vermeer painting finally reveals hidden Cupid in background


Enlarge / A new restoration of Johannes Vermeer’s Girl Reading a Letter at an Open Window has revealed a Cupid in the background. The restored painting will be the centerpiece of a new exhibition at the Gemäldegalerie Alte Meister in Dresden, Germany, from September 10, 2021, through January 2, 2022.

Since 1979, art historians have known that Johannes Vermeer’s Girl Reading a Letter at an Open Window (circa 1657-1659) featured an overpainted figure of a Cupid in the background. Most assumed Vermeer himself had painted over the figure. Now, thanks to a major restoration by the Staatliche Kunstsammlungen Dresden in Germany, the overpainting has been removed to reveal the Cupid. That process also revealed that someone else painted over the Cupid in the 18th century, after the artist’s death, causing a rethinking of how the painting should be interpreted. The fully restored canvas is now on view to the public for the first time at the Gemäldegalerie Alte Meister, one of many galleries that form the Staatliche Kunstsammlungen Dresden.

The use of various X-ray imaging techniques—especially synchrotron radiation—has become a powerful tool for the nondestructive analysis of great works of art. For instance, European scientists in 2008 used synchrotron radiation to reconstruct the hidden portrait of a peasant woman painted by Vincent van Gogh. The artist (known for reusing his canvases) had painted over it when he created 1887’s Patch of Grass. The synchrotron radiation excites the atoms on the canvas, which then emit X-rays of their own that can be picked up by a fluorescence detector. Each element in the painting has its own X-ray signature, so scientists can identify the distribution of each in the many layers of paint.

In 2019, we reported on the work of a team of Dutch and French scientists who used high-energy X-rays to unlock Rembrandt’s secret recipe for his famous impasto technique, believed to be lost to history. And in 2020, an international team of scientists used synchrotron radiation to determine the cause of alarming signs of degradation to Edvard Munch’s famous painting The Scream. The team’s analysis revealed that the damage is not the result of exposure to light, but humidity—specifically, from the breath of museum visitors, perhaps as they lean in to take a closer look at the master’s brushstrokes.

Once mistakenly attributed to Rembrandt, Vermeer’s Girl Reading a Letter at an Open Window is one of the earliest-known examples of the Dutch master’s use of pointillé, a technique similar to embossing or engraving that involves punching dots. It was popular in the 15th century for decorating armor and firearms and was used on handmade book bindings in the 17th century. Vermeer’s version incorporated tiny white globules of paint to capture effects of the light. It’s sometimes cited as evidence that Vermeer used optical aids, most likely a camera obscura or a double-concave lens, although this remains a controversial hypothesis.

Paint samples were analyzed in the 1960s, revealing nothing unusual about the artist’s choice of materials. He used pigments common to the Baroque era, including blue azurite, lead-tin yellow, vermillion, madder lake, and lead white. The painting was first subjected to X-ray analysis in 1979, revealing the Cupid lurking under the overpainting and making this another example of Vermeer’s “painting within a painting” canvases. Scientists subjected Girl Reading a Letter to infrared reflectography in 2009, and in preparation for this latest restoration, the painting was examined via macro X-ray fluorescent scanning—to map the distribution of elements—and stereomicroscopy as well.

Conservationist Christoph Scholzel initially removed multiple layers of varnish, first applied in the 19th century and renewed repeatedly, which had gradually turned yellowish-brown with age. That’s when he noticed the paints used in the central background where the Cupid was hidden had different solubility properties than those used elsewhere. Subsequent analysis showed that there were old layers of a binding agent, as well as a layer of dirt, between the paints in that area and the paints used by the Dutch master. This implies that several decades must have elapsed between Vermeer completing Girl Reading a Letter and the overpainting of the Cupid. The latter could not have been done by Vermeer.

Based on that finding, the decision was made to remove the overpainting to restore Girl Reading a Letter as Vermeer had intended. For this, Scholzel used a fine scalpel, monitoring the process under a microscope in order to retain what is likely the last original varnish layer applied by the artist himself. Here’s what the painting’s once-blank background now depicts, per Hyperallergic:

The blond-haired god of love and desire holds a bow in his right hand and gazes out at the viewer from the picture on the wall, enclosed by a thick black frame. On the floor behind him are two masks, possible symbols of deception; Cupid tramples over one of them with his right foot in an allegory of faithfulness and true love. Vermeer’s famous ethereal light streams through the open window, lending the scene a transcendent, spiritual glow.

“It is in Girl Reading a Letter that Vermeer discovers his own, distinct style. It marks the beginning of a series of paintings in which individuals, generally women, pause during an activity to find a moment of calm, and to reflect,” said museum director Stephan Koja. “Restoring the Cupid in the background shows us the master from Delft’s true intention. Beyond the superficial romantic context, it makes a fundamental statement on the nature of true love. Until now, we could only see this as a fragment. Now we know what a key role it plays in his oeuvre.”

From a technical standpoint, “The changed appearance of the Girl Reading a Letter at an Open Window, including the overpainting removed at the borders of the canvas, gives us an opportunity to reconsider the painting’s composition and how it works visually,” said Uta Neidhardt, the museum’s head conservator and exhibition curator. “The borders appear curiously unfinished—perhaps Vermeer covered it with an actual wooden frame, which is why he left them in such an ‘open’ condition. If we assume that he had planned to use such a construction, we immediately recall the experimental works by church interior painters from Delft, with their trompe-l’oeil curtains, or Pieter de Hooch’s intricate interiors.



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