What kind of light best makes a flat object look round and real, showing its curves and bumps?

The kind of light that best makes a flat object look round and real, showing its curves and bumps, is directional, oblique light with a degree of diffusion. Directional light means the light source comes from a specific point or general area, rather than being entirely ambient, which is light coming from all directions uniformly. This is crucial because it allows for the formation of distinct shadows. Shadows are fundamental to perceiving depth and form, as they indicate that light has been blocked by a raised part of an object, creating areas of less light. Without directional light and the shadows it casts, an object appears flat and two-dimensional. The light source should be positioned at an oblique angle relative to both the object and the viewer. An oblique angle means the light hi....