What does the DMC Sampler do when not "connected" with Adaptive DMC image sampler?

[kristofferhelander]

Hello there! I'm a long time visitor here but this is my first post I thought I'd kick off my membership here by getting some deeper understanding of the V-Ray DMC Sampler.

 

When using the Adaptive DMC image sampler you can check the "Use DMC sampler thresh." checkbox

 

Now, what's the benefits/disadvantages of doing this as oppose to using the "Clr tresh."?

And when/what situation can it be beneficial to use the "Clr tresh." instead?

 

And what is the DMC Sampler-rollout doing when using any of the other image samplers, Fixed or Adaptive subdivision?

What effect does the "Noise threshold" or "Adaptive amount" variables have when not using Adaptive DMC as image sampler?

 

Cheers!

//Kristoffer

[DavidRees]

search this site for Brian Smith posts -he went into this in great detail, lots of pics, etc.

[kristofferhelander]

Could you give me something more to go on? The search engine isn't exactly reading my mind

 

What was the post's title?

Edited April 15, 2012 by kristofferhelander

[Corey Beaulieu]

http://www.interstation3d.com/tutorials/vray_dmc_sampler/demistyfing_dmc.html

 

This is the best explanation that I have ever read.

 

In the end it all boils down to a balance between your material subdivisions, your min/max on your DMC setting, and whether or not you want a noise evaluation to allow the adaptive to stop at a lower setting than the max amount or a color evaluation. Reading this made me a lot less afraid to put some high numbers in those slots and set it off as a fully adaptive mode. It can really help with Brute Force renders.

[kristofferhelander]

Ah, cool article!

 

I'll have a look at it, thanks!