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Caustics shadows changing


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I haven't had this issue before but now that Im in Vray 6 when applying caustics it changes the shadow angle considerably within the water.  What am I missing here?

Ive adjusted IOR just to see if something funky was going on there and it made no difference to the shadow line weather I set it to 5 or 1.

Same results if I switch from Progressive (WIP) to Photon Mapping

Single light source - Sun

Photon Emit Radius is covering the entire scene. 


Caustics on.jpg

Caustics off.jpg

Photon Emit radius.JPG

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