Visual characteristics thumb|484px|right|Difference between standard direct illumination without shadow penumbra, and radiosity with shadow penumbra The inclusion of radiosity calculations in the rendering process often lends an added element of realism to the finished scene, because of the way it mimics real-world phenomena. Consider a simple room scene.
Visual characteristics thumb|484px|right|Difference between standard direct illumination without shadow penumbra, and radiosity with s.hadow penumbra The inclusion of radiosity calculations in the rendering process often lends an added element of realism to the finished scene, because of the way it mimics real-world phenomena. Consider a simple room scene