Answer by Moog for Understanding light power values
According to the documentation the strength value of the node should be in Watts, but this doesn't seem to be correct from experimentation. The empirical behaviour of this seems to be as a multiplier....
View ArticleUnderstanding light power values
On Blender 2.80, lights (other than the sun) have various options for their strength. By default there is Power, measured in Watts, and a color option. If you enable "Use Nodes" you also get a generic...
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