Model for Altarpiece in St. Peter's

This oil on canvas modello, dating to around 1625 and now held at the Los Angeles County Museum of Art, was Vouet's preparatory study for an altarpiece intended for St. Peter's Basilica in Rome — a commission that placed him among the elite tier of painters working for the papacy during one of the most competitive periods in the history of Roman art. Vouet had arrived in Rome around 1614 and spent thirteen years there, absorbing the competing influences of Caravaggism, the Bolognese classicists, and the proto-Baroque decorative programmes of Pietro da Cortona and Giovanni Lanfranco. A commission for St. Peter's represented the summit of Roman patronage, and modelli such as this served the practical purpose of showing the clergy or cardinal overseeing the commission what the finished altarpiece would look like. The scale, colour, and compositional arrangement of the modello were typically approved before work on the full canvas began. LACMA's acquisition of this work allows comparison with Vouet's Roman style before his return to Paris transformed him into a distinctly French painter, showing the heavier Caravaggesque influence he would later moderate.

As a modello, this canvas is more freely handled than a finished altarpiece, with gestural brushwork that prioritises compositional clarity over surface polish. The lighting is strongly directional, consistent with Vouet's Roman period absorption of tenebrism. Figures are blocked in with confident, summary strokes, and the palette is richer and darker than his later Parisian work.