Invisible – Controls whether the shape of the light source is visible in the render result. When this option is enabled, the light source is not visible in the rendering. When this option is disabled, if the light source is seen directly by the camera or through refractions, it appears in renderings in the current light color. Occlude Other Lights – Controls the behavior of the light, when Invisible is enabled, in relation to other light sources. When enabled, the invisible light blocks the lighting from other lights as if it's visible. Also, in reflections the light behaves as if it's visible and occludes other lights. When disabled, the light is transparent for other lights and does not occlude them. Double Sided – When enabled, light emits from both sides of the plane. Affect Diffuse – Determines whether the light affects the diffuse properties of the materials. Affect Specular – Determines whether the light affects the specular properties of the materials. This means glossy reflections. Affect Reflections – Determines whether the light appears in reflections of materials, both perfect and glossy reflections. Affect Atmospherics – When enabled, the light influences the atmospheric effects in the scene. This option is not available with V-Ray GPU. Diffuse Contribution – A multiplier for the effect of the light on the diffuse component. Specular Contribution – A multiplier for the effect of the light on the specular component. Atmospherics Contribution – Determines the amount of influence the light has on the atmospheric effects. Cut-off Threshold – Specifies a threshold for the light intensity, below which the light is not computed. This can be useful in scenes with many lights, where you want to limit the effect of the lights to some distance around them. Larger values cut away more of the light; lower values make the light range larger. When this value is 0.0, the light is calculated for all surfaces. |