Render noise as RGB noise

[Dariusz Makowski (Dadal)]

Heya

I was wondering is it possible to control the noise of lights/materials/dof that come out of engine so that we can tint it? Or match it to camera noise or something like that? Just doing a study of vray dof and how well I can get it to look photographic and giving all the great options that vray has I'm sort of missing rgb noise. Well atm I can either sky rock render settings to get great noise-free image and noise it up back in PS but maybe it would be possible to render on lower settings with rgb noise.

I bet vray has some type of algorithms that deal with noise and physically reduce it as it render along, maybe there is a way to tweak them to give us some rbg noise variations?

Thanks, bye.

[Zdravko]

There are a few places from which one can control the noise (RGB) in the scene like Light subdivs, DMC sampler, etc. But I am not sure that you can fully match real photograph noise or at least it will be very tedious and difficult to test.
Having that in mind it might be better to output a noise-free image and add noise later in post.

[Dariusz Makowski (Dadal)]

Heya

Humh, yes I guess getting clear image is the best way to go but also the longest way.

Thanks, bye.

[Morbid Angel]

I think the idea itself poses a problem down the road, for example lets say you rendered a 2k frame with RGB noise in it (pretend you had that option) first you need to know exactly the camera noise you are matching to and also type of film etc, and pretend that the image later on goes through either postprocessing or scaling or whatever that noise is bound to change beyond anything you originally wanted...post noise seems like the only option for now...unless it was on a layer of its own or something....

Also remember the way renderers process the grain in non uniform, some areas can be more or less grainy, ie glossy reflections/gi etc, while camera noise is more or less constant...with some exceptions.