For an i/o plugin, I need to supply values to these properties of the light format: Falloff (the distance at which the light intensity is 0) and Falloff Exponent (the feathering of the light, or softness of edges). It would need to behave like this: enter image description here

Notice how at a falloff exponent of 0 the light is solid—there's no feathering. I've already experimented with the light falloff node and was never able to come close to this result. So far, it has seemed I can't even control the "feathering" of the light (other than the radius property). Is what I am trying to accomplish even possible?


1 Answer 1


The radius (as you said) and Blend Options are a way to manage something close

enter image description here

  • $\begingroup$ I'm aware of those properties but they don't work in this case as I need more fine control if possible $\endgroup$
    – Colton Fox
    Nov 30, 2021 at 3:25
  • $\begingroup$ @Emir: your gif is really hard to recognize... $\endgroup$
    – Chris
    Nov 30, 2021 at 11:52

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