In Old Man, the viewer sees an elderly man with a weathered face, deep-set eyes, and a thoughtful expression. The color palette is muted, with earthy tones dominating the scene. The background is simple, focusing attention on the figure, who wears a dark, worn coat.

This portrayal captures the essence of age and experience. The painting is executed in oil on canvas, a common medium for portraits of the time. Millet's technique involves a loose brushwork that adds texture to the man's skin and clothing. The dimensions of the artwork are approximately 65 x 81 cm, making it a moderately sized portrait.

The composition is straightforward, emphasizing the subject's facial features and the emotions they convey. Jean-François Millet was a prominent figure in the Realism movement, known for depicting the lives of peasants and rural workers. Old Man reflects his interest in portraying the dignity of labor and the human condition. Interestingly, this work was created during a period when Millet was focusing more on individual character studies rather than broader social themes.

This painting exemplifies his ability to convey deep emotion through simple subjects.