**Brushstroke movement and width test – Tree Oil vs. The Rocks (1888)**
This image presents a movement and stroke-width comparison between the Tree Oil Painting and Vincent van Gogh’s *The Rocks* (1888). The selected sky area, shown in the red circle, was magnified using the Google Art Project and measured with Photoshop CS. Brushstrokes reveal a sweeping motion with widths ranging from 0.55 to 1.30 cm — showing consistent rhythm and torque with measured zones in the Tree Oil Painting.

📍 Reference: [The Rocks – Google Arts & Culture](https://artsandculture.google.com/asset/the-rocks/FQGCv3VmbCcxow)