In Portrait of Nanna Risi, Ferdinand Keller depicts a woman with a serene expression. The colors are warm, with soft browns and rich reds dominating the palette. Nanna is dressed in a traditional outfit that adds to the painting's historical context.

The background is subtly blurred, focusing attention on her face and attire. The painting is executed in oil on canvas, a medium that allows for rich color and texture. Keller's technique involves fine brushwork, creating lifelike details in Nanna's features. The composition is balanced, with Nanna positioned centrally, drawing the viewer's gaze.

The use of light and shadow enhances the three-dimensionality of her figure. Ferdinand Keller was a prominent German painter known for his realistic portraits. This work, created in the 1880s, reflects the artist's commitment to capturing the essence of his subjects. An interesting fact about this painting is that it was commissioned by Nanna Risi's family, highlighting its personal significance.

Keller's portraits often reveal the character and personality of the individuals he painted.