A detailed sixteenth-century engraving by Johannes Wierix, depicting the painter Willem Key with his artistic tools.

This engraving by Johannes Wierix depicts the Flemish painter Willem Key. Wierix, a member of a prolific family of engravers in Antwerp, demonstrates his technical precision through the controlled use of hatching and cross-hatching to define form and texture. The portrait captures Key in a half-length pose, holding a palette and brushes, which identifies his profession. He wears a cap and a doublet with decorative slashes, typical of sixteenth-century attire.

The composition includes a Latin inscription below the figure, a common feature in portrait prints of this period intended for collectors or biographical compendiums. The text, 'De Guilielmo Caio Bredano, Pictore', introduces the subject, while the accompanying verses praise his ability to capture human likeness. The background consists of horizontal lines, which provide a neutral setting that directs attention to the sitter's face and hands. Wierix employs a disciplined line quality to render the details of the beard and the fabric of the clothing, showing the high level of craftsmanship associated with the Antwerp school of printmaking.

Johannes Wierix was known for his ability to replicate the styles of other artists, often working on a small scale with great detail. This print is part of a broader tradition of documenting the lives and appearances of contemporary artists. The clarity of the engraving allows for a clear reading of the sitter's features, reflecting the analytical approach to portraiture prevalent in the Low Countries during the late sixteenth century. The work remains a clear example of the technical standards maintained by the Wierix workshop, which produced a vast number of prints that circulated throughout Europe.