Interior Daylight.

[akinlolu olugboji]

This is what I have after 150 passes on E0. I believe it could be better. Feel free to tweak materials and adjust light as the need be.

[Roy Hirshkowitz]

Fun.  I did check on the light fixtures briefly and noted that they do have some asymmetry which would account for the asymmetrical caustic.

[akinlolu olugboji]

That I must say I do not understand?

Roy Hirshkowitz said:

Fun.  I did check on the light fixtures briefly and noted that they do have some asymmetry which would account for the asymmetrical caustic.

[Roy Hirshkowitz]

If you look at the light fixtures closely the connectors between the rings are not symmetric-- they occur on one side or the other.  This could easily account for an asymmetric reflection of the light. You can also see a fainter, symmetric ring on the ceiling-- this is a reflection off a symmetric surface.  Harder to tell on yours-- a little easier to see on mine-- is the very bright caustic in the focal area of the light (e.g. on the table surface) which also exhibits a touch of asymmmetry.

Exactly how the light is getting there is tough to figure out.  It can bounce a bunch of times before striking the ceiling.

[akinlolu olugboji]

Now I get it. I plan on replacing the spot lights in them with Omni-lights and see the effect.