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Strange circular pattern

Posted: Tue Jun 02, 2015 9:40 am
by marchermitte
Hello!
I setup a scene with a camera at 1 km from my building, zoomed with a 400mm lenght (to remove perspective like an orthographic view) and I tied up the camera to octane using the nodal trick (I render the grass and plants directly in lightwave and need a match between lightwabve and octane camera for compositing purpose. There are too many instances to render with my dual GTX 780 ti)

I get this very strange circular patterns in my renders...

Image

Re: Strange circular pattern

Posted: Tue Jun 02, 2015 11:03 am
by marchermitte
It's definitly based on the distance/focal as I get rid of those artifacts when I move the cam to 500 m from the subject and reduce the lense to 200mm. I guess there is a limitation in Octane..

Re: Strange circular pattern

Posted: Tue Jun 02, 2015 11:07 am
by whersmy
adjust your ray-epsilon setting :idea:

Re: Strange circular pattern

Posted: Tue Jun 02, 2015 1:11 pm
by marchermitte
Dammit... right the ray epsilon!
Thank you, totaly forgot about this one!