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Quote from: PROH on 2015-06-02, 00:56:15
You can do 1 of 2 things: Set Reflection level to 0,98, or turn down the White color to 248,248,248 (anything lower than 255,255,255).
This shouldn't be a problem, especially if fresnel IOR is set to some low value.

It's noisy because it's a problematic scene - small windows, high contrast = GI problems + DOF + MB. You need a lot of GI and AA samples here. The biggest problems are with DOF/AA sampling on glass/metal (because it's excessive) and sunlight bounces. I would say this kind of scene simply needs a lot of time to refine. I tried optimizing it yesterday, used buckets but the result was "acceptable" after about 1h. Still there was some noise on the glass teapot. So my advise would be to change lighting, change materials, set dof and mb to acceptable minimum.

Maru thanks for you time!I too think so.
Thanks again:)

6

[Max] I need help! / Re: Cleanup Noise

« on: 2015-06-01, 21:14:27 »

Quote from: danielmn on 2015-06-01, 17:13:22

just reall fast I saw some of you materials are using 100% reflections and pure whites.

This can cause a lot of unwanted noise and time to resolve

Do you have solution for that?
Thanks

7

[Max] I need help! / Re: Cleanup Noise

« on: 2015-06-01, 21:12:19 »

Thaks Rawalanche,

yes,yes...Maru told me about that sample for corners...Thanks again.
I tried to set default and set GIvsAA to 4 and disable caustic ,but nothing:(
Noise still here...Maybe little better ,but not clean!
render time is 30min about 300passes

next render is 1hour little bit better noise

After that I listened Maru's advice and add corona sky,and disable motion blur...
30min without changes:( ,buy the way lighting is fantastic!Corona is really,really good!

and finally I tried to delete walls and hit the render...
30min 226passes
very clean image without noise!I'm very happy about that

It seems that Corona doesn't like low light situations...

8

[Max] I need help! / Re: Cleanup Noise

« on: 2015-05-31, 22:45:58 »

Hello Maru :)
Thank you very much for fantastic tips!
I followed your instructions but without success:(
please look at this images

First render is my setup

Second render is your recomednation

Third render is my experiment...

I have better noise in second and third render but very bad in DOF...( Yes! I followed corona guide about dof.)
Time of render is the same, but number of passes is different.

If you want, you can try this scene when you had the time.
https://www.dropbox.com/s/dwd30l8ksu9sc2y/CoronaTeapotsScene.zip?dl=0
Maybe you can find better solution than I am.

Maybe I demand a lot of Corona for such a short time?!?!

Thank you very much ;)

9

[Max] I need help! / Cleanup Noise

« on: 2015-05-29, 12:22:33 »

Hello every one:)

I need some help about noise in out of focus parts?
How can I cleanup my image?

Take a look at the picture, where I circled problematic parts

I tried same thing without dof but nothing special...Noise is here!

I think that is half of hour should be enought to clean the image,but it isn't...Do i have to let it render a little bit longer,or do i have to set something in render?