Hello.
can someone tell me where this artifact came from and how to remove it?
Hi keczoks,
Sorry for missing this topic you posted. From the image, I think the problem you encountered is the same as this one: Vegetation path was visible in the finished image - Get Help / Tech Support - D5 RENDER FORUM
it can be some strange refraction from other areas in the scene. Please check the exposure setting.
Otherwise, it can be related to the video driver version, please make sure it is updated.
If the problem remains, you can contact us any time.
Thanks,
Oliver