Author Topic: Noise reduction - help!  (Read 950 times)

2021-11-13, 17:51:54

BSimon

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Hi!

I have problem in interior scene. I would like to reduce render noice (it is still in some places visible after many passes) - but only in sky enviroment light/ when I leave only interior lights there is no noise at all very quicly.
Maybe some corona render settings? I`ve never touch it because I didn`t neet till now?

Attached files:
One with enviroment light (big noise) + one with only interior corona rectangular light (no noise)

Best regards,
Szymon
My portfolio on Instagram:
@szymon.bochenek.studio

2021-11-13, 18:25:10
Reply #1

BSimon

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One more example from this scene. Its after 300 passes and 2% noise level ://
Render settings are default. Denoising didnt help much in such big noise.

BR,
Szymon
My portfolio on Instagram:
@szymon.bochenek.studio

2021-11-13, 19:42:07
Reply #2

GraceKellyPerfect

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Well I m no corona expert by any means but to me this looks like GI noise. Therefore, you could try increasing GIvsAA samples to 32 (from 16) for example. Then you could lower LSM from 2 to 1 because at 32*1=32 you get same result as with 16*2=32.  Increasing GIvsAA will increase render times but it should get rid of noise. Maybe try 64*0,5 combination if 32*1 doesn't work. Don't go over 64.
You could also try to slightly reduce MSI (Max Sample Intensity) from 20 to something like 18 and that should also help reducing noise. Don't decrease it too much (to values below 10 or so) or you will lose brightness and render will not look realistic

2021-11-13, 20:51:38
Reply #3

BSimon

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GIvsAA=128 and LSM=2  works quite well
 
thank you!!!

Anyone have any other advices which didnt make render time much longer?

Best regards,
Szymon
My portfolio on Instagram:
@szymon.bochenek.studio

2021-11-13, 21:10:55
Reply #4

BSimon

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I had a lot of trees behind windows - when I hided all of them - noise is much smaller!
My portfolio on Instagram:
@szymon.bochenek.studio