Noisy effect in the render..depth!!

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Old 11 November 2012   #1
Noisy effect in the render..depth!!

I've done this rendering in 3ds max 2012 using Vray renderer 2.0...the output is carried out on a medium quality..yet some portions of my render are a bit noisy..if any one can suggest me how to irradicate that..also if u could find any other flaws in my render then do suggest me ...!!
thank you!
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Old 11 November 2012   #2
Glossy reflections. I forget the terms. There's a way to spread the samples out. Fast Glossy maybe? I'm not good at fixing the problem. ;-)
 
Old 11 November 2012   #3
If you can afford the render time, use Adaptive DMC with settings

Min Subdivs 1
Max Subdivs 100
Adaptive Amount 1.0

And set the Noise Treshold below 0.001 or lower for noise free sampling. The lower the value the less noise you get, but it will also increase render time considerably. But the treshold value is the only thing you need to control as all glossy effects answer to the DMC settings globally.

You can check out the Embree plugin for Vray which might speed up your render 75% the original render time if you're lucky. http://www.spot3d.com/vray/misc/
 
Old 11 November 2012   #4
Originally Posted by Swahn: If you can afford the render time, use Adaptive DMC with settings

Min Subdivs 1
Max Subdivs 100
Adaptive Amount 1.0

And set the Noise Treshold below 0.001 or lower for noise free sampling. The lower the value the less noise you get, but it will also increase render time considerably. But the treshold value is the only thing you need to control as all glossy effects answer to the DMC settings globally.

You can check out the Embree plugin for Vray which might speed up your render 75% the original render time if you're lucky. http://www.spot3d.com/vray/misc/

Increasing the Max Sub value to 100 takes the rendering time to skies !! don't u think..well yeah reducing the Noise Threshold to .001 helped decreasing the the noisy effect !!

Last edited by deepika01 : 11 November 2012 at 05:08 AM.
 
Old 11 November 2012   #5
Originally Posted by deepika01: Increasing the Max Sub value to 100 is takes the rendering time to skies !! don't u think..


Actually no, it all depends on the Noise Threshold value and the amount of contrast in individual image features. The higher the contrast the more samples. But if the Max Sub value is too low there won't be enough additional samples even if you set the Noise Threshold to 0.001 or lower. It is the beauty of adaptive sampling, it put samples where they are needed.

But in general, all monte-carlo based renderings will take long time to get noise free, especially for blurry effects, but in the Vray DMC algorithm makes it adaptive, which helps quite a bit. Try use the Embree plugin and see if it can speed things up a bit.

Last edited by Swahn : 11 November 2012 at 05:40 PM.
 
Old 11 November 2012   #6
Originally Posted by Swahn: Try use the Embree plugin and see if it can speed things up a bit.

I tried to install the plugin but somehow my Max doesn't seem to except any of its versions.
I am using Max Design 2012, VRay 2.0 32/64-bit windows.
 
Old 11 November 2012   #7
Originally Posted by deepika01: I tried to install the plugin but somehow my Max doesn't seem to except any of its versions.
I am using Max Design 2012, VRay 2.0 32/64-bit windows.


I think you need Vray 2.3.x for it to work.
 
Old 11 November 2012   #8
Originally Posted by Swahn: I think you need Vray 2.3.x for it to work.


Yes, it's 2.3. I hear 2.4 will have the tech built-in. Also, unless you have a modern intel cpu you won't see any gains.
 
Old 11 November 2012   #9
Originally Posted by Swahn: If you can afford the render time, use Adaptive DMC with settings

Min Subdivs 1
Max Subdivs 100
Adaptive Amount 1.0



That's the old "Universal method" but it's long outdated and no longer gives the right results. Many will find 2/6 to be better *and* faster these days...
 
Old 11 November 2012   #10
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