Vray noise / no noise with render region

[julienfrd]

Hi all,

 

I'm using Vray to render a scene, I usually don't have problems with day lighting, but this scene is quite dark and have a lot of small lights (spots, vray lights, and a vray sky with low intensity). I don't know why, but I have a lot of noise.

 

The strange thing is that if I only render a region, there is no noise...

 

Any idea about the reason and how to solve it?

I attach a capture where you can see the noise and "no noise" if render region, + vray settings.

 

Thanks in advance.

[Corey Beaulieu]

You are rendering with Progressive. A region running for a minute gets more passes than a full image. Let the full image render for a lot longer. You can always stop it if you are happy with it before its complete.

[Francisco Penaloza]

Corey si correct, I also would reset all VRay settings to default, your settings seems like very low, this will give fast feedback for testing but not usable for Final render.

You LC is way too low, if you have a few lights, your GI need to increase.

[julienfrd]

Hi Corey, Francisco,

 

Sure, in adaptive, all ok, thanks.

But why does the progressive rendering stops instead of increase quality if I don't stop it by myself?

 

(the low quality settings, yes, it's just for testing )

[Corey Beaulieu]

Because you have a time limit set to 1 minute.

[Francisco Penaloza]

Hi Corey, Francisco,

 

Sure, in adaptive, all ok, thanks.

But why does the progressive rendering stops instead of increase quality if I don't stop it by myself?

 

(the low quality settings, yes, it's just for testing )

 

Please refer to the VRay manual, there explain in detail how progressive rendering works.

in a nut shell you can setup quality Vs Time. IF you need quick rendering, you setup the time, if you ultimate goal is quality then you setup passes.

[julienfrd]

Ok, it was easy, sorry for the newbie question..!

Very nice, the progressive mode

Thank you!