Grain/Noise in render

Started by Dammarran, October 24, 2009, 10:23:17 am

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Dammarran

October 24, 2009, 10:23:17 am Last Edit: October 24, 2009, 10:30:29 am by Dammarran
Hi everyone,

I seem to have alot of grain/noise in the final render. Anyone have an idea what it could be?
Quality setting maxed everywhere inlcuding ray traying (Cloud, atmo and full render)


Dammarran

Close topic, found out that somehow one of the cumulus layer's had smallest detail set to 0.0000386 ^^

Oshyan

Just in case it's still useful, the main thing that affects grain in clouds is the quality/samples setting. Same for the atmosphere. Sometimes it's difficult to determine if noise is coming from clouds or atmosphere though, so you should do crop renders with different settings to test in these cases.

Also enabling raytraced shadows in clouds or atmosphere will not help with grain in any way, and we generally recommend you do not use these settings unless you have a very specific reason and need to do so. The most common need for it in the atmosphere is if you have a problem with the sun glow being visible through terrain when the sun is low on the horizon. Raytraced shadow settings in clouds and atmosphere basically enable shadows from terrain either into the atmosphere, or onto clouds, respectively. In most cases neither is present in a scene. Enabling them just makes render times a lot longer.

- Oshyan