noise from artificial light

[swork]

Guys, need your help again. =)
Noticed that when included artificial lights - appears some noise.
Here you can see in the picture.
When illuminated with natural light - all right,  as soon as I activate artificial light -  noise appears =(

P/s.
Also a strong dependence on hdri. Top right-green shades from hdri card.
Obviously from the the greenery (grass, trees)  in HDRI. Is possible somehow reduce the impact HDRI card on objects reflections. Or need to correct the HDRI  (muted greens in Photoshop for example)?

[hrisek]

Are you using PT+PT solution? If yes - then try to use PT (Path trancing) + HD. In my case almost all noises artifacts are removed during render.

[swork]

Are you using PT+PT solution? If yes - then try to use PT (Path trancing) + HD. In my case almost all noises artifacts are removed during render.

No,I use PT+HD.
And noise not leave no matter how much time has passed =(

[gabrielefx]

this happens with all progressive pathtracing renderers, cpu or gpu based.
You can try to use buckets and isolate the area with more noise to check how many samples you need or AA.

you have to render 1,5 or 2X the image, then scale it in PS with a slight denoising with Nik or similar filters.
Many photographers love noisy picts.

set the AA filter to 2.

regards

[maru]

About the noise, you can try increasing "lights samples multiplier". Also:
http://corona-renderer.com/wiki/performance_debugging

About the greenish hue from HDRI, you can try adding a black/grey ground plane. This might be colour from grass if it is present on your HDRI.

[swork]

About the noise, you can try increasing "lights samples multiplier". Also:
http://corona-renderer.com/wiki/performance_debugging

Thanks Maru, but the noise is not everywhere, but only in those places where the light comes from the artificial light

[swork]

set the AA filter to 2.

regards

filter AA set 2.