noise

[yanislachat]

Hello,
Could anyone help me... please
I have rendered my scene during 15 hours at 1600px but there is always a little bit of noise and I don't know how to get rid of it...
there is also small white dots on the edges that I dont know how to eliminate.(see attachment)
What setting should I change to get a perfectly clean result??

thanks for you help

y.

[Stan_But]

diffuse level less then 0.8 (read about "albedo")
diffuse level for general metall and glass - 0.0
Portals in windows
Max Sample Intens. to default - 20
Also much noise from direct coronalights and IES-lighes

And don't use thin wall with daylights - u get a small white dots like on your picture

[Christa Noel]

And don't use thin wall with daylights - u get a small white dots like on your picture

hi headoff,
what is "thin wall with daylights"??

[Stan_But]

And don't use thin wall with daylights - u get a small white dots like on your picture

hi headoff,
what is "thin wall with daylights"??

Hi noel20,
outside wall must have thick

[maru]

He meant that your walls should have thickness if you are using environment lighting outside. And it looks like this might be the cause of your noise. Are you using displacement?

[Christa Noel]

i never used plane as my wall (if plane is what you mean about "thin" wall) but if the thickness isn't exposed, i never care about its thickness. yes maru, sometimes i used displacement with blend material for walls.
check the attachment.. the wall thickness isnt exposed, the thickness is measured about 30mm. is it necessary to change it to 100-150mm (walls real thickness)??

[Stan_But]

i never used plane as my wall (if plane is what you mean about "thin" wall) but if the thickness isn't exposed, i never care about its thickness. yes maru, sometimes i used displacement with blend material for walls.
check the attachment.. the wall thickness isnt exposed, the thickness is measured about 30mm. is it necessary to change it to 100-150mm (walls real thickness)??

No.
30 mm is enough

[Christa Noel]

ah 30mm is enough. yes, my wall never get noised.
so, what is the rule about wall thickness which mean safe to free noise produced? is there a minimum thickness?

[Stan_But]

ah 30mm is enough. yes, my wall never get noised.
so, what is the rule about wall thickness which mean safe to free noise produced? is there a minimum thickness?

You can test it yourself
But main rule is that walls must not have thickness only in one polygon

[Christa Noel]

ok thanx headoff, many thanx for your advices.
:-D