Unreal Engine 5 Documentation has been moved to the Epic Developer Community

5.4 - Soft Source Radius

An overview of the Lighting example level, example 5.4: Specular Scale

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ContentExamples_Lighting_5_4.png

This example shows the effect of Soft Source Radius on a light's reflection. Soft Source Radius is available in the Light category of the Details panel.

ContentExamples_Lighting_SoftSourceRadius.png

Soft Source Radius is a way to blur out a highlight that you feel is too sharp. Generally, it is a good idea to use the Roughness value or Texture of the Material itself rather than setting Soft Source Radius on a light, but it can be useful on the occasional stray light that has too sharp of a highlight. Also keep in mind that setting this to a value greater than one will make the light not physically correct.

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