Cycles templates are strange about freecad-render HOT 5 CLOSED

Hello,
May you be so kind to attach the .fcstd file, please? I will have a look... Thank you!

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I had to recreate the render-targets, because I did not save them. For some unknown reason the coloured faces now show up?! The glowing anomaly still exists in my cycle-render.

Steckdosen_4-fach_render.FCStd.gz
(I had to gzip it, because github does not like FCStd-files).

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Hello,
My explanation:

1. In studio template there is a distant light in direction (-1, 1, -1.5), in order to cast shadows. You can see it neatly in this model:
   
   This distant light is what enlightens the holes and the edges in your model.

2. You use pure white in your model RGB(1,1,1), this is physically incorrect. For the renderer, it means that all incident energy is reflected by the material - absolutely no absorption. That makes the holes glowing in a non-realistic manner. Whereas in physical world, absorption takes place and albedo never exceeds 0.8 (see https://en.wikipedia.org/wiki/Albedo#Terrestrial_albedo). For pure white, it's usually suggested to use RGB(0.8, 0.8, 0.8); for instance, this is the default value for diffuse shader in Blender. My suggestion would be to decrease your white to RGB(0.8, 0.8, 0.8) and then you should get something more realistic (moreover it should help reducing noise in more complex scenes)

By the way, I may increase a bit the distant light intensity in the future for Cycles light studio, your example pointed me out it's a bit weak...

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80 % might be physically (more) correct but then the object isn’t white in the rendering but grey.

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Update/precision: FreeCAD colors are in sRGB, my suggestion was in linear RGB.
RGB(0.8, 0.8, 0.8) = sRGB(0.9, 0.9, 0.9) or #e6e6e6, that's what should be entered in FreeCAD

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