This detail view compares the corresponding rim area in the control and variable condition images. It examines how lighting conditions affect the visibility of rim thickness, curvature, and the transition between the inner and outer surfaces.

What changes in the variable image? Directional light produces a clearer highlight-to-shadow transition along the rim, making its thickness, curvature, and rounded profile more readily visible.

Detailed Observation

In the control condition image, bright and even illumination reduces tonal separation between the inner and outer edges of the rim. As a result, its thickness, rounded profile, and subtle irregularities appear relatively flat.

In the variable condition image, directional light creates stronger tonal differentiation along the rim. The transition between its illuminated upper edge and darker outer surface makes the thickness, curvature, and three-dimensional profile easier to perceive.

These differences reflect changes in photographic conditions rather than changes in the ceramic object itself.