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Light

Intensity – Total The total energy that the light emits.

Light Color – The color that the light emits.t

Inner Cone Angle – Sets the inner cone angle of the Spot Light, in degrees.

Outer Cone Angle – Sets the outer cone angle of the Spot Light, in degrees.

Affects World – When enabled (the default), the light contributes to the lighting in the level. Disabling it will stop the contribution of the light in the environment.

Cast Shadows – When enabled (the default), the light casts shadows. Turn this option off to disable shadow casting for the light.

Use Inverse Squared Falloff – Specifies whether to use the physically based inverse squared distance falloff.

Light Profiles

IES Texture - The IES Texture used for the light profile. IES files are in ASCII data format, and although Unreal represents them as textures, they are not image files.