OK, but you don't have IDL so this thread isn't relevant to you. IDL is not a kind of light - it's a lighting model dealing with secondary bounced light from object to object. It stands for Indirect Diffuse Lighting. It allows objects to light each other. IDL scenes can be rendered to good effect with no lights whatsoever.

By the way, in the last post you said a couple peculiar things:

• Saying you're using IBL at 20% is like saying you drive a vehicle at 20% of its maximum speed. 20% of what? The image used in the IBL (Image based light) can mean that one man's 20% is another man's 100%. If you meant you're using an Image Based Light without an image, and just set to white, then I know what you have, but you need to say that in order for the reader to know what you actually have.
   
• An Infinite Diffuse light is an Infinite light where you disabled the specular component. Is that what you did? If not, it's an infinite light that is not just diffuse. Image Based Lights (in Poser) are only diffuse. An ordinary infinite light is just called an infinite light.

Is there some reason you described your lights in this thread? Is there a lighting problem you're interested in solving?

In any case, this thread would not be the place if we're not talking about IDL.
 

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)