An ancient photographic technique is used to question the process of vision and the attempt to represent the surrounding world. The canvas is painted with photosensitive emulsion (cyanotype process), left in contact with a tree, and exposed to sunlight and atmospheric agents for a day and a night.

During this period the color of the canvas changes depending on the points touching the tree and the amount of light that affects it. Once removed from the tree, the canvas will have recorded a shape and a certain amount of light that will continue to change over time.

The title (Argon, from the Greek "inactive") refers to the limited perceptual capacity of the human being, which makes the tree appear as an inactive being despite its real nature we cannot access.