This page provides information on the V-Ray IES Light.
The V-Ray IES Light is a V-Ray specific light source plugin that can be used to create physically accurate area lights.
Enabled () – Turns the VRayLight on and off.
Color – Specifies the color of the light.
Intensity (lm) – When enabled, specifies the strength of the light to override the intensity specified in the .ies file.
IES Light File – Specifies an .ies file to use for the current light.
Shape – Determines how the shape of the light specified in the .ies file will be taken into consideration during the calculation of shadows.
From IES File - Uses the shape information stored in the .ies file.
Point - Treats the light shape as a point light.
Circle - Treats the light shape as a planar circular area light. Its dimensions can be specified with the diameter parameter below.
Sphere - Treats the light shape as a sphere light. Its dimensions can be specified with the diameter parameter below.
Diameter – Specifies the diameter for applicable light shape types.
The Diameter parameter is only available when the Circle and Sphere shapes are selected.
Affect Diffuse – When enabled, the light affects the diffuse properties of the materials.
Affect Specular – When enabled, the light affects the specular of the materials.
Shadows – When enabled (the default), the light casts shadows. When disabled, the light does not cast shadows.
Caustic Subdivs – Used by V-Ray when calculating Caustics. Lower values produce noisy results but will render faster. Higher values produce smoother results but take more time.