Click To Enlarge.  It's a big pic.

A quick render with studio softbox setup.  Same setup as the original, just tweeked the render settings for better IDL result in a distant camera angle perspective.  When the subject was close up in a portrait, lower IDL settings were OK.  For this kind of perspective, you need a much cleaner result, or lots of artifacting and blotchiness will show up on the white surface of the room.

Again, no real Poser lights used here.  You can actually see, in this perspective one of the two square props used to light the entire scene.  Rendertime for this, on my machine, hovered around 1hr, which really isn't too bad for the size of the original image.  It would have been done probably in 10 minutes, if not for the IDL calcs hanging up on the hair for a while.

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.