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Example: Noise vs Speed

You can use the DMC sampler as global quality control, for example:

For lower quality:

- increase the Amount
- increase Threshold
- reduce Min samples

For higher quality:

- decrease the Amount
- decrease Thresold
- increase Min samples 

These controls have an effect on everything: DOF, GI, glossy stuff, area lights etc.

The Color Mapping mode also affects render times and sampling quality, since V-Ray tries to distribute samples based on the final image result. 

The images below have the same subdivs for DOF (10 subdivs), GI (50 subdivs, Direct method), glossy reflection (50 subdivs, no interpolation), area light (10 subdivs) for all images. Notice how changes in the DMC sampler parameters affect the image quality and render time (click the images to enlarge them):

 

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53.6s

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5

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22.8s

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The results in the render quality and render time are negligibly small. That is why, we highly recommend the default settings that work for a wide variety of scenes.

Section
Column
width20%

Column
width60%
Image slider
Panel
borderStylenone

Image Added

Adaptive amount 0,85; Noise threshold 0,005; Min samples 16

Panel
borderStylenone

Image Added

Adaptive amount 0,95 Noise threshold 0,01 Min samples 5

Panel
borderStylenone

Image Added

Adaptive amount 0,95 Noise threshold 0,05 Min samples 5

Panel
borderStylenone

Image Added

Adaptive amount 0,99 Noise threshold 0,05 Min samples 5

Panel
borderStylenone

Image Added

Adaptive amount 1 Noise threshold 0,1 Min samples 5

Column
width20%

 



 

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