Esterau,

You were using Poser Pro with built-in gamma turned on. This causes all kinds of changes I didn't prepare you for. I built the EnvSphere shaders and GenIBL shaders for old-style Poser rendering. I can make everything work right under Poser Pro, but I have to do the opposite of various things.

Question: Is that image really HDR? It looks gamma corrected to me, even after you turned off gamma correction in Poser. Where did you get it? If that image is actually gamma corrected already, even if it is HDR, then you need to set Gamma In to 2.2, Gamma Out to 2.2.

Also, you used GenIBL with Render Gamma = 2.2. You made a bad IBL probe. Do it over again.

As for you shadow, why do you even have one? There are no shadows in the photo. If you want a shadow that long, you need to make the ground cover more space. The shadow has to fall on the ground - it can't extend beyond the ground - there's nothing there.

Also, to get the shadow to be the right color, you really need to use my new shadow catcher, which I have not released yet.

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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)