Intensity (lm) – When enabled, specifies the strength of the light in Lumens to override the intensity specified in the .ies file. See Intensity example below for illustration.
IES Light File – Specifies an .ies file to use for the current light.
Shape – Determines the shape of the light when calculating Soft Shadows. By default, VRayLightIES uses the shape information stored in the .ies file. See Shape example below for illustration.
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.
UI Text Box
type
info
The Diameter parameter is only available when the Circle and Sphere shapes are selected.
Light Shape – Determines whether and how the shape of the light is taken into consideration during the calculation of shadows and illumination.
Disabled – The light shape is not considered for illumination and the light generates sharp shadows. For Shadows Only – The light shape is considered only for the generation of soft shadows. The illumination is not affected by the light shape (i.e. it behaves as a point light). For Emission and Shadows – The light shape is considered for the calculation of the illumination and shadows.
UI Text Box
type
info
The Light Shape parameter affects the shadows and emission when the Shape parameter is set to From IES File.
Column
width
5%
Column
width
35%
Image Removed
...
Image Added
Options
...
Section
Column
width
60%
Shadows – When enabled (default), the light casts shadows. When disabled, the light does not cast shadows.
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.
Affect Atmospherics – Specifies whether the light influences the atmospheric effects in the scene. The value determines the amount of involvement.
Caustic Subdivs – Used by V-Ray when calculating Caustics. Lower values produce noisy results but render faster. Higher values produce smoother results but take more time.
