non common artefacts

[thablanch]

Any ideas

I had red dots, splotches, bad grain, but never some of theses

HDR lit
4 Vray lights inside, right under the "real" fixture
Linear workflow

Regular reflections on metal, non interpolated, 8 subdivs

[Da_elf]

styrafoam explosion? thats my best guess.
the other guess is you might have some sort of (show clamped areas) thing turned on

[jujubee]

It looks as if you have the clamped setting unchecked.

[thablanch]

Clamped is unchecked, but I taught that's how we should do it with linear workflow.. I'll check the clamped option and give it a try..

[thablanch]

Well, it makes a difference, it removes the black line arount the blotch, but the blotch itself remains..
Times runs out now, I'll do a lot of photoshop I guess

[dlparisi]

Are you using the ColorCorrect plug-in? That's what did it for me-not as excessive but still the same annoying white dots.

[thablanch]

No, I can not use it on render farm (it blablabla)

[instinct]

@dl : turn on clamping when using colour correct...works fine for me

Thorsten

[dlparisi]

turn on clamping when using colour correct...works fine for me

Damn, that would have been easier than removing the colorcorrect nodes and reworking the textures. I'll give it a try. Thanks