White Specs

[vlado]

Well, I asked for a file months ago in another thread and still nothing, so I'll take anything I can get you FTP infos to upload it.

Best regards,
Vlado

[glorybound]

I'll get you something later today.

[Vizioen]

Well, I asked for a file months ago in another thread and still nothing, so I'll take anything I can get you FTP infos to upload it.

Best regards,
Vlado

This should do it. I think. MAX 2016, latest offical build.

http://goo.gl/7lfBHx

[Svetlozar Draganov]

Just going to post an image here before uploading the scene, maybe it's setting related. Basically an interior with a very large window.

[ATTACH=CONFIG]25624[/ATTACH]
[ATTACH=CONFIG]25625[/ATTACH]
[ATTACH=CONFIG]25626[/ATTACH]

After 7.5 hrs hours of rendering at 4K.

Edit: might have something to do with the Mesh lights. I haven't really tested anything as I had very little time. Those circular thingies are mesh lights with the same shape as the casing which is a refractive material with some blurry refractions.

I ended up putting a median filter in photoshop to remove those but that blurs the thing quite a bit.

The high noise levels comes from a few things:
1.BF settings - this is a interior scene and 32 subdivisions are just not enough.
2.Min Shading Rate - there are a lot of glossy reflections in the scene and since their materials subdivisions are too low the result is noisy.
3.Image Sampler Type - Progressive image sampler is not as effective as Adaptive one in this situation.

You could speed up the rendering and increase the image quality by tweaking the following settings:

1.Switch to IM with high preset, 75subdivs
2.set Min Shading Rate to 50
3.set IS to Adaptive with 1/12/0.01 for Min/Max/Color Threshold.

If possible try to render the scene with the above settings and let us know what is the result compared to the previews one.

[mienda]

Hi,
As Bobby, I meet more and more often these white spots in my scenes. I notice they usually appear with the use of GGX BRDF. The subpixel mapping and the max ray intensity don't work at all, the only way to fade them a bit is to modify the GTR Tail Falloff from 2 to 3... but otherwise nothing works (except if you clamp, but i don't want it).On the other hand I tried presets recommended by Svetlozar but except huge rendered times, it does not work at all.
But maybe I do not use very well these new GGX shaders (the glossiness seems much more sensitive to noise than other types of BDRF ...).
I will try to send you my scene in the next days.
thanks
mienda

[NicoC]

Hello,

On a side note, I thought one should set Probabilistic Lights off for now ? in the settings screenshot posted by Vizioen, it's on .. from what we've seen here so far, setting this option on is a no-go.

[mienda]

hi,

in my scenes, I never use probabilistic lights. I find it slow and noisy.
But I agree with you Nico, the noise problem in the Vizioen image seems to be caused a bit by some probabilistic lights. Personaly the noise I had in some of my scenes is much more important and visible, much like Bobby in his screenshot at the beginning of this thread and i'm pretty sure that the GGX BDRF is the problem.

[maxwood]

Just going to post an image here before uploading the scene, maybe it's setting related. Basically an interior with a very large window.

[ATTACH=CONFIG]25624[/ATTACH]
[ATTACH=CONFIG]25625[/ATTACH]
[ATTACH=CONFIG]25626[/ATTACH]

After 7.5 hrs hours of rendering at 4K.

Edit: might have something to do with the Mesh lights. I haven't really tested anything as I had very little time. Those circular thingies are mesh lights with the same shape as the casing which is a refractive material with some blurry refractions.

I ended up putting a median filter in photoshop to remove those but that blurs the thing quite a bit.

What intensity is your light material set at? (If you're using it)

I've had the firefly issue in the past when coworkers were ticking compensate camera exposure on the light material and then still setting the intensity to silly numbers.

[Vizioen]

What intensity is your light material set at? (If you're using it)

I've had the firefly issue in the past when coworkers were ticking compensate camera exposure on the light material and then still setting the intensity to silly numbers.

If I had any, intensity ranged around 50-100 iirc, camera exposure compensation is never on.