Photoshop 3D Material Eyedropper Tool Explained

The 3D Material Eyedropper Tool in Adobe Photoshop allows users to sample and replicate complete material properties directly from a 3D model, rather than sampling only a flat color value. This guide outlines the specific texture maps, optical settings, and surface attributes that the tool extracts from a 3D mesh for reuse across other objects or scenes.

Unlike the standard Eyedropper Tool, which records only the two-dimensional RGB or CMYK value of a specific pixel, the 3D Material Eyedropper Tool samples the multi-layered shader information assigned to a surface. When you click on a 3D object with this tool, Photoshop extracts all active material channels simultaneously.

The primary components extracted by the tool include:

  • Diffuse (Base Color): The primary color or texture map that defines the underlying appearance and pattern of the material under standard lighting.
  • Specular and Specular Color: The color and intensity of light highlights that reflect off the surface, defining how shiny the object appears.
  • Roughness and Glossiness: The surface micro-geometry settings that determine whether reflections appear sharp and mirror-like or scattered and matte.
  • Bump and Normal Maps: Grayscale or RGB height data that simulates physical depth, cracks, crevices, and surface details without altering the 3D model's actual polygon geometry.
  • Opacity: The transparency settings and alpha masks that dictate whether light passes through the object or how transparent the material is.
  • Refraction (Index of Refraction): The optical data that controls the degree to which light bends as it passes through transparent or translucent surfaces like glass, water, or plastic.
  • Ambient and Glow (Self-Illumination): The lighting values that determine how the material reacts to ambient environmental light, as well as any light the surface appears to emit on its own.
  • Environment (Reflection): Settings and texture maps that dictate how the surrounding scene or image-based lighting reflects off the object.

Once the 3D Material Eyedropper Tool samples this information, the entire material definition is stored in the 3D Material system. Photoshop automatically switches to the 3D Material Drop Tool, allowing you to instantly apply the extracted texture maps and optical settings to another 3D object, mesh component, or polygon selection.