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Likewise, multiple IBL lights may exist at once, but only one may be active (“shining”) at a time. If a Physical Sky light or Sky Dome is also active, the sky light will be used for any unused channels in the IBL. For example, if an IBL and a Physical Sky are both active, and the IBL uses only the background channel, the illumination, reflection, and refraction channels will be provided by the Physical Sky.
Physical Sky
Top: Sun Disabled indicator icon; Bottom: Sun Enabled indicator icon
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