Transparency, translucency, and subsurface scattering
Describe transparent, translucent, and subsurface-scattering materials through light, form, thickness, and background effects.
What it is
Transparent materials let you see through them, as with glass, clean water, and thin plastic. Paint their edges, thickness, and reflections, along with the scene behind them. Show how the material bends, tints, or softens that background.
Translucent materials let light through without showing sharp images. Frosted glass, wax, jade, thin cloth, petals, and skin can glow as light spreads inside them. Subsurface scattering describes light entering, scattering beneath, and exiting elsewhere. Show soft, saturated color in thin or backlit areas, then blend it into regular shading.
These materials still need value, form, thickness, cast shadows, occlusion, and a consistent light direction. Balance transparency, glow, and normal shading so the material remains solid and readable.
Why it matters
This skill helps you distinguish glass, water, skin, liquids, and thin materials through their light behavior. Weak control can make forms lose solidity, merge into a bright shape, or look opaque when they should transmit light.
You can check it when
- ✓Paint the same object as opaque, transparent, and translucent. Each version shows a different response to light at a glance.
- ✓Show a glass or clear-water object with its edges, thickness, reflections, and background visible without competing.
- ✓Place soft subsurface color only in thin or backlit areas of skin, leaves, or fabric, and blend it into regular shading.
- ✓Adjust scattering on skin without making the whole face glow. Paint frosted or milky materials with visible form and thickness.