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Vray to Unreal: lighting issue

Hey guys,

I’m trying to get the closest result of my 3D render in Vray into unreal but I got some issue. Can you help me out?

Here’s what I’ve got in my 3ds max scene:


3 props, 2 lights, no GI. A pretty simple test scene.

I use datasmith to export those to unreal and here’s the result after building the lights (production level):
unreala.jpg

I tweek some exposure parameters to get a better result without success.

It seems like my lights are corrupted in some ways; as I put some unreal light to replace them it works just fine.
Is there something to do to make it work properly ? What am I missing here?

Thank you!