Noise Again

[kluner]

Hello,

I am useing corona alpha v6. I have read few articles about noise form varied topics but didn't find the solution.
All settings seems to be set up correct. On the scene, there is only corona sun. I used corona portals.
Has somepne any ideas how to reduce the noise? Only "Light Samples Multiplier" and "GI/AA BALANCE" options setted up really high has helped but the same time increased time of rendering realy bad, but there was still a lot of noise

[cecofuli]

Post the scene. It's better.

[kluner]

You mean the whole zipped file?

[romullus]

Only if your scene contains no copyrighted assets. Otherwise upload only scene containing walls, lighting and render setup.

[kluner]

This scene had to show only the Arrangement of rooms. Sometimes i have similar situations in varied scenes, but not on so big scale. I have read about the noise and in most of situations the tips work well but sometimes i have no idea how to reduce it in this version of corona. This scene is not so important but it is a good example where tips which i know doesn't work.
I had to delete hdri map - it was to big to attach it here

[romullus]

I don't know how well render setup has transfered from alpha to 1.6, but i can't see big errors in your setup or materials, except HDRI map in enviroment, which has very wrong mapping coordinates and that probably contributed to the noise greatly. Please see attached screenshot for correct coordinates setup. Keep in mind that you can change at will only U offset. Also you can set U tiling to 1 or -1, but not any other value, otherwise lighting will be incorrect.
I also added portals to all openings, but that is not strictly necessary and you can get noise free results without using portals as well.

[goldfish]

You can try to replace other HDRI image for light source, because in many cases some HDRI image can cause a lot of can't eliminate noise。

[kluner]

Thank you for yours replies. It has helped me alot!