Arnold render's question

[ronnitec01]

When I render a scene by Arnold, some model will not be rendered correctly, especially the angle of the rectangle model, the rendered view will always be black or a little bit white. Just like the attached rendered picture. Anyone, please help me to solve this question, thanks very much.

[Christoph_Schaedl · Accepted solution]

How does the geo look like? Are the UVs distorted?

Its hard to say if that is a reflection or its coming from the geo.

[ronnitec01]

Thank you very much, it's really due to UV's distorted.