Ok, I think I see what you're saying.

I'm assuming that that shadows arn't enabled on all your lights (is this what you mean by saying 1 infinite for shadows, that the other lights have shadows disabled?).

IDL will force the occlusion for all the lights in the scene unless you exclude them from raytracing. Thus the scene will look darker.

If this is the case then you're kind of using a combination of old and new approaches to lighting your scene, in that you're using some of the lights to add extra fill to the shadows.

I actually quite like the depth of the first render.

 

PoserPro2014(Sr4), Win7 x64, display units set to inches.

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