rendering too noisy

dannagiusy64

Lately the renderings seem noisy to me even if the progressive rendering settings are optimized. I want to make an interior rendering full of lights and burning candles. But it's all too loud. Suggestions in settings? Thank you

Taoz

A shot in the dark: try lowering gamma correction value

dannagiusy64

 But if I lower the gamma it doesn't become too flat?

Taoz ha detto:

Uno scatto al buio: prova ad abbassare il valore di correzione gamma

Taoz

With "too loud" I assume you mean too bright?  I often lower gamma correction instead of brightness when an image is too bright, it often gives a better result IMO.  I'd suggest trying it and see how it works. 

NewGuy

Low lighting will increase render time (or increase noise).  Generally you want to have brighter lighting to reduce noise.  By brighter lights, that doesn't necessarily mean more lights, as the more lights you add to a scene, the more time that needs to be taken to calculate light bounces from those lights...

Try some of these options:

1.  Try to use spotlights or point lights instead of geometry based lighting (primitives with emission lights) where possible.

2.  Try turning on post-demoising, under render settings/filtering.  

3.  Purchase some sets that specifically help with low lighting situations.  KindrendArts has some good ones:

Iray Interior Speed Lights

Iray Night Light Kit

4.  Increase your environment light intensity if you are using HDRIs (Render Settings/Environment).  If not, change it to scene lighting only. 

5.  Try setting up your scene with brighter lighting than you want (so it will render faster), but in the tone mapping section of the render setttings increase the exposure value (which will make the image darker in the long run).  

Unfortunately, low lighting scenes are naturally going to take longer to render as Iray will need more light bounces to resolve the noise.  Hope some of that advice helps.

 

dannagiusy64

 this is the render I did but it is very noisy at high quality settings.

Taoz said:

With "too loud" I assume you mean too bright?  I often lower gamma correction instead of brightness when an image is too bright, it often gives a better result IMO.  I'd suggest trying it and see how it works. 

dannagiusy64

It won't let me upload the file.

felis

dannagiusy64 said:

It won't let me upload the file.

You need to click 'attach file' below the message field to attach an image.

After you have attached it succesfully, you can post, click the image and copy the link, and edit your post attach the image with the image function. 

dannagiusy64

 It says: Can't find file data in your post... I don't know what you mean...

felis said:

dannagiusy64 said:

It won't let me upload the file.

You need to click 'attach file' below the message field to attach an image.

After you have attached it succesfully, you can post, click the image and copy the link, and edit your post attach the image with the image function. 

felis

I have never seen that message.

You need to have the image stored on your computer - you can't paste it.

After clicking Attach file there should open a window where you can browse to the image.

Taoz

dannagiusy64 said:

It won't let me upload the file.

Certain special characters in file name will prevent upload - use only alphanumeric characters (a-z 0-9) and space, hyphen and underscore.