A portrait of the artist's brother, Alois Gerstl, rendered with energetic brushwork and a distinctive light-filled interior.

This portrait depicts Alois Gerstl, the artist's brother, dressed in his military uniform. Painted in 1905, the work captures the distinctive approach of Richard Gerstl, an Austrian painter whose career was brief but marked by an intense, subjective style. The composition places the subject in the foreground, standing before a domestic interior that is rendered with rapid, visible brushstrokes.

The background features a room filled with furniture, including a chair and a mirror, which reflects the surrounding space. Gerstl employs a palette dominated by light greens, yellows, and deep browns, creating a contrast between the dark, structured form of the uniform and the agitated, light-filled environment. The application of paint is thick and energetic, a technique that prioritises the physical presence of the medium over smooth, academic finish. This method allows the light to catch the texture of the canvas, adding a sense of movement to the static figure.

Gerstl remains an outlier within the Viennese art scene of the early twentieth century. While his contemporaries often focused on decorative or symbolic themes, his work leans towards a raw, psychological honesty. This portrait demonstrates his ability to balance the formal requirements of a likeness with an expressive, almost nervous energy. The interior space is not merely a backdrop but a component of the psychological atmosphere, where the light from the window interacts with the reflective surfaces of the room. The work provides a clear example of his departure from traditional portraiture, favouring a personal vision that anticipates later developments in European expressionist painting.