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Roughness map AOV altered at render time in Houdini mantra


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Hi, I've setup a simple scene with a grid and a material applyed to it and I've exported the roughness map to an AOV, I've checked the Luminance values and they are different from what I see in Nuke, do you know why this heppens?:o

Mantra values around 0.92
Nuke Value around 0.87

I've put in the attachment both the scene and the map

 

Roughness.zip

Edited by RiccardoT
Wrong attachment
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