Invisible – Controls whether the shape of the VRayLight source is visible in the resulting render. When disabled, the source light is rendered in the current light color, otherwise, the light source itself is not visible in the scene.
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The Invisible attribute only affects the visibility of the light when seen directly by the camera or through refractions. The visibility of the light with respect to reflections is controlled by the Affect Specular and Affect Affect Reflections options.
Affect Diffuse – Determines whether the light is affecting the diffuse properties of the materials. With this option off, there will be no diffuse contribution from the light.
Affect Specular – Determines whether the light is affecting the specular of the materials (i.e. glossy reflections). With this option off, there will be no specular contribution from the light.
Affect Reflections – Determines whether the light will appear in reflections of materials, for both perfect and glossy reflections.
Affect Atmospherics– When enabled, the light influences the atmospheric effects in the scene.
Affect Alpha – Determines whether or not the Dome Light is visible in the Alpha channel of the render. When enabled, you will have a white alpha where the background is visible. When disabled, you will have black alpha where the background is visible.
Diffuse contribution – A multiplier for the effect of the light's diffuse contribution on a surface.
Specular contribution – A multiplier for the effect of the light on the specular of the surface.
Atmospherics contribution – Determines the amount of influence the light has on the atmospheric effects such as VRayEnvironmentFog, VRayVolumeGrid or Phoenix effects. This option is not available when rendering with V-Ray GPU.
