still grainy
KeithH
Posts: 338
in The Commons
Hi -
I choose the Ultra HD 16:9 resolution with all the default settings.
In my scene is nothing more than my character posed with some clothes.
When I render there are still some grainy areas. I have no idea how to fix the graininess.
Thanks in advance
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Comments
Hi,
Chances are that it needs to render longer. The darker the image, the longer it will take to get the noise out. It's easier to tell if you post your image or part of it.
In the meantime, you should check out this thread. The intel denoiser is great, and mcasual's script makes it extremely easy to use once installed.
https://www.daz3d.com/forums/discussion/334881/use-this-a-i-based-open-source-de-noiser-from-the-comfort-of-daz-studio/p1
Also this tip for Iray renders:
"In the Progressive Render settings for Iray is an On/Off button for Quality. If you turn it off, Iray stops trying to reach convergence, leaving Max Samples and Max Time as the only limits to your render. And if you set Max Time to 0, (zero,) you've essentially disabled that limit as well. Then you can use Max Samples to control how long your image renders. And if the default limit of 15000 samples isn't enough, you can go into the parameter's settings and turn limits off."
I do what Phoenix1966's tip does except I leave Render Quality ON but set to 1.0 / 95.0 for the qualities of converge and the max iterations at 2000 with 0 as the max time. I often get renders that converge before 2000 iterations with these settings even at FHD resolutions.
I mostly ignore or don't notice all but the worse graininess (it's usually not noticable to me).
Trying what Phoenix1966 said to see what happens.
While I have been messing around a bit for months, I am still new at all of this. Not gone past default settings as I do not understand what they mean.
Hopefully this works - Thank you
More light is what you really need to fix grain.
Just know that if you crank up those settings the image will take a lot longer to render, so depending on your hardware, that may be an issue for you.
There is an alternative inside and outside of Daz, denoising. In the render editing settings, find filtering. There you click to make denoising available, and then click to enable denoising. When the denoiser first kicks in, it will look pretty surreal. Let it render like normal and it will clear up as it goes.
There is a tiny little tab button on the left side of an active rendering window that will pop out when you click it. This allows you to turn the denoiser on and off during an active render to compare them. So if you find you hate it, you turn it off without restarting. Some people do hate the denoiser. The denoiser can blend out some detail in a picture, but it really depends on how the pic was setup. It can be different for everybody. You may find that you love it, because the image can look done long before it actually finishes, which can save a huge amount of time.
You can also use external apps to do denoising on finished pictures.
Thank you