Vray gain

[sekuence]

I get grain in my vray interiors, i usualy use a vray sun, one or two vray lights.

 

IR+LC, vray light samples >1000. But its relly grainy yet. Plz help

[danb4026]

First, turn your noise threshold down, its under DMC Sampler in the Settings tab of the render dialog. Try using .003....this is a high quality setting and may take a while to render, but it will give you and idea of what the change does. The lower the value the less noise.

 

Second, what do you have your subdivisions set at for your individual vray lights? Default is set to "8", many times you have to turn this up to smooth out the results of vray lights. You will see these settings under "Sampling" within the vray light's dialog itself.

 

Give these a try one at a time and lets see the results.

[Ricardo Eloy]

As a starting point, I would stay away from Noise Thresh (DMC Sampler). It will crank up every single thing in VRay, and I don't think you'll want that. In cases like yours, the usual suspects are the VRay Light's subdivs. 8 normally gives some grain, so you might want to set it to 32 or, if that's the case, more. You can also do a small test to find out if the lights are causing the problem or not: save the GI you got from rendering the images you showed us, set the light's subdivs to 32 and render it from file. If they are to blame, your image will come up noticeably cleaner.

[sekuence]

hi there, i would like to say thaks to everyone, by now the problem has been solved, i increse all material subdivds and i also did put the vray lights subdvs from 8 to 16, and i also set the noise trshold to 0.003, the renders are no fine, but the render time ir really high, like 2 hours 640x480. Here is the actual frame (still a wip), please criticise

 

 

Thanks everyone

[Ricardo Eloy]

As I said, at first you don't have to increase everything. Just increase the light's subdivs to, say, 32 and see what happens. If you set your noise thresh. to such low value, everything will be very well calculated (hence no artifacts and rendertimes going thru the roof).