Artifact
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To generate this scene I placed 12 columns around a circle by using rotations and then translations along the same axis. I then placed a marble column and a gold base at each position.
After that I placed a cone with a gold base at the center and a glass sphere above it.
I then placed two lights behind the last column to have a powerfull flood light (which shows off soft shadows nicely).
The final product was rendered at 512 pixels with 400 sub samples each pixel (20x20) at a depth of 10. The sub samples were jittered as well as the light source direction using a random sphere instead of a point.