Sun Position 1

Seems okay.  BSDF sun patch is relatively close to actual sun patch.






























Sun Position 2

BSDF sun patch is relatively close to actual sun patch location.  However there is a funny circle of light at the point of the BSDF sun patch.





























Sun Position 3

BSDF sun patch is relatively close to actual sun patch location.  But again there is a funny circle of light at the point of the BSDF sun patch.





























Sun Position 4

At this sun angle panelite dosen’t allow any direct light to pass.  Instead the inner surface of the cylinder reflects light towards the opposite ceiling.

Clear Glass

Mkillum with Panelite BSDF

Clear Glass

Mkillum with Panelite BSDF

Clear Glass

Mkillum with Panelite BSDF

Clear Glass

Mkillum with Panelite BSDF

Below are static renderings of four sun positions of the model with produced using

1 - clear glass skylights

2 - panelite skylights using BSDF

mkillum was run with l+ so that direct light sources are included in the output.

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