Basicwiz,

I render using Dimension3D's script, available through the menu. The IDL strength slider is easily found in with all the other IDL settings. It took me a while to even think of moving it - I had no idea why I would want to. Then I did a low light render and none of my figures were casting shadows on the ground, because IDL was blowing them away. I turned IDL strength down to 0.4 and all my shadows came back, but I still had the benefit of IDL. It changed the balance between direct lighting and indirect lighting.

My apologies for being mysterious and enigmatic :-)

Free stuff @ https://poser.cobrablade.net/