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Since I ever used this technique in 3Delight for adding the diffuse daylight into my rooms, now here I present a free iRay shader to do the same. Or create …

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Since I ever used this technique in 3Delight for adding the diffuse daylight into my rooms, now here I present a free iRay shader to do the same. Or create additional diffuse light for any other purpose in your sceens.

Please keep in mind: GhostLights add some light into your scenes which comes out of the nowhere, doesn't show up in reflections and is totally un-photorealistic. But it may help to increase iRay render times.

This package contains a shader preset to install invisible light objects (preferred simple planes) to additionally illuminate the room of your scenes. Those lights don't show up in reflections. Perhaps it is not that comfortable compared to the corresponding product of the DAZ shop, but very simple to handle.

Just install a primitive plane behind the window or under the ceiling with its normal poining inside the room. After selecting the surface simply apply the Diffuse GhostLight Shader Preset. Now it is up to you to adjust the emission parameters "Emission Temperature" and "Luminance" for your likes. The selected unit parameter "Cd/cm²" guarantees a constand light flux independant of the size (constant per area unit).

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