I think it's worth a mention, so as not to confuse some people who are new to IBL, that Poser doesn't actually do HDRI lighting. You can adapt a .HDR lightprobe to work with the IBL in P6, but it's still LDR (low dynamic range). Once you save a .hdr to .jpg, .bmp, or .tga, it loses the high dynamic color range, and becomes LDR. Only floating-point .tiff, .hdr, .pic, and a few other formats retain the necessary pixel depth, and Poser doesn't support those AFAIK, and it would require running a process-intensive GI calculation to light the scene. I know you guys in this thread (Cath, Paul, etc.) already know this, but with the term HDRI being thrown around lately, I think it's something that might confuse people, and should be clarified. ;-)

---

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

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