Noise in the dark areas, black dots on V-Ray render

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28 Sep, 2013 Stas
28 Sep, 2013 # Re: Noise in the dark areas, black dots on V-Ray render
Hello, you can help with the following problem. When rendering, there are loud noises in the areas that are less light falls, for example skirting the right side of the window on the screenshot, it's not material, not ir settings. map (I think I'm supposed to), not geometry.


1 Oct, 2013 Anton (Staff Author)
1 Oct, 2013 # Re: Noise in the dark areas, black dots on V-Ray render
Hello!

The principle of adaptability render Biased engine to which, for example, a V-Ray, lies precisely in the fact that in well-defined, ie bright areas, rendering quality more accurately than in a poorly visible in the rendering, that is, the dark areas of a scene. As a result, the darker the site, the more noise there.

It should also be understood that all areas where not exposed to the direct rays from the light source may be illuminated only by GI, that is re-reflected rays from the surrounding geometry, initially emitted from the light source itself. Of course, re-rendering the reflected beams is more complex than straight. Therefore, the noise from the "secondary housing" more than from direct sampling.

With specific regard to your case, then you have a very low quality render settings . Here no options, only to increase rendering quality, as well as the right to install light in the window 😉



28 Sep, 2013 Stas
2 Oct, 2013 # Re: Noise in the dark areas, black dots on V-Ray render
Thanks for the answer and explanation, Anton! 🙂 On stage I have given me just lighting Plano, now this scene with VraySun + VraySky + VrayLihht plane, set up the lights on the subject of your website, I would like to ask why in the image below is too zasvetlenny ceiling (Sori for offtopic, I know , this topic is already there)? After all, render settings with splints site, plane outside expelled from the lighting, curtains and blinds added An exception vireylayta Plain outside, vrayLight plane is less than the window size, the ceiling plain gray vraymtl. screens render settings, lighting, camera, attach the stage below the stage (quality uzhato for picmatic): Scene 2 (with a grid arrangement of light and sun): vraysun, vraysky, camera, vray plane (window): Render Settings:


1 Oct, 2013 Anton (Staff Author)
3 Oct, 2013 # Re: Noise in the dark areas, black dots on V-Ray render
If this topic is already there, then there must be an answer😁
I can only advise to read the lesson about HDR rendering , it just affects the theme of "the covenants on the ceiling."

Render Settings will not comment, they differ from our recommended.

As for the lights, then you are not truly understood. Look carefully at the diagram position lights o from my previous post. They are not outside, but on the contrary, they are in front of the interior curtains inside😉



23 Jul, 2014 Olga.
23 Jul, 2014 # Re: Noise in the dark areas, black dots on V-Ray render
Hello. Before creating this theme, I naturally read all these piggybacking prkticheski all the tips, eventually the noise was less, but the black dots can be seen and, even more than the number of bledno.Uvelichivala subdivs materials have not helped (suspected occurrence material plaster). Changing the LC and IP also not pomoglo.Podskazhite, please specifically for my scene, I do not. And here is the render:


23 Jul, 2014 gus_ann (3dsmax vray expert)
23 Jul, 2014 # Re: Noise in the dark areas, black dots on V-Ray render
Olga, hi. You can see on the ceiling light. If it is to remove or disable what's going on? Black dots 100% due to the noise and it too.


23 Jul, 2014 Olga.
24 Jul, 2014 # Re: Noise in the dark areas, black dots on V-Ray render
I made 2 versions even if the light source Plain and left scope in both cases increased to 1000 LC, Image Sampler 4 8.Variant and where the scope of a larger-about Colva subdivs in IP.No..ochen long render, about 9 o'clock and the scene is completely empty. With lower settings, everything quickly, but can not see that at the level of the ceiling plaster and all shumit.Vot I hesitated because of the noise.


23 Jul, 2014 Olga.
24 Jul, 2014 # Re: Noise in the dark areas, black dots on V-Ray render
Improved in agent 2 in the region without the IC's first low setting, the second as in the previous render almost final https://imageshack.com/i/ip5db439j https://imageshack.com/i/iqfff885j


23 Jul, 2014 gus_ann (3dsmax vray expert)
24 Jul, 2014 # Re: Noise in the dark areas, black dots on V-Ray render
Well what can I say about the time ??? We have to work with lighting. Here you have this area shines on the ceiling, but from what she is? Chandeliers do not. Do not forget that improve subdiv with noise should be first on the light source, and then on the materials. 9:00 is a long time, I'd say this is not acceptable for the rendering quality.


23 Jul, 2014 gus_ann (3dsmax vray expert)
24 Jul, 2014 # Re: Noise in the dark areas, black dots on V-Ray render
And yet - this is your sphere seems geometry intersects with the ceiling, it can also provide noise.


23 Jul, 2014 Olga.
24 Jul, 2014 # Re: Noise in the dark areas, black dots on V-Ray render
Thank you for your sovety.Sfera appeared at the ceiling, unnecessarily. moved her, trying to understand, from the chandeliers and whether shum.Tak ostavila.Voobsche under the chandelier course byla.Voobsche all IP put subdiv 25.S ceiling does not intersect, proveryala.Seychas I added illumination, these black spots are gone, thank you! But reneder still very long.


6 Dec, 2014 Becks_1
6 Dec, 2014 # Re: Noise in the dark areas, black dots on V-Ray render
Hello! I have a problem in the form of sand render noise in places where it is not exposed to direct light or sun or from artificial light sources. If even more precisely on the ceiling. Greatly improve sabidivy not want and even get a little confused ... can tell me that?


13 Apr, 2015 Roman
13 Apr, 2015 # Re: Noise in the dark areas, black dots on V-Ray render
Hello! Prompt how to deal with the noise, graininess: Thank you.


20 May, 2015 taras_991
20 May, 2015 # Re: Noise in the dark areas, black dots on V-Ray render
Hello! Trying to get rid of noise in dark places (as in the first picture), are excluded from coverage vray light curtains and tulle (on the advice of the forum RenderStuff), which led to such incomprehensible overexposure and artifacts (picture 2). Maybe someone knows what could be the problem? And I was quite desperate, I need the customer has to send a picture, such as cocoa poluchaetsya 🤔


26 Jul, 2015 Kseniya
26 Jul, 2015 # Re: Noise in the dark areas, black dots on V-Ray render
Hello! I can not solve the lighting problem. What is not my sources, it is still the scene is dark and the wool in the corners. It can be seen lighting the discrepancy in the viewport and render the scene is in vray dome - sun spot target - rays vray plane (skyportal) vray sphere - light indoors


26 Jul, 2015 Kseniya
26 Jul, 2015 # Re: Noise in the dark areas, black dots on V-Ray render
Hello! Tried to change the camera settings, but the result is always the same (Vray camera gives darker results: Jbychnaya camera gives a bright picture: Tell me what to do to with virey chamber was light and without noise and wool?


31 Jul, 2015 Roman R
31 Jul, 2015 # Re: Noise in the dark areas, black dots on V-Ray render
it is always the case - if you put DEFAULT Wray Cams is necessary to change the shutter speed by 1-2-3-4- ... usually give you 20 200 is likely. Honour manuals plus


2 Aug, 2015 Kseniya
2 Aug, 2015 # Re: Noise in the dark areas, black dots on V-Ray render
Thank you I did not think that we need such a low shutter speed (


2 Aug, 2015 Kseniya
2 Aug, 2015 # Re: Noise in the dark areas, black dots on V-Ray render
And in the fight against the "wool" can only increase subdivs?


26 Jul, 2015 Kseniya
13 Aug, 2015 # Re: Noise in the dark areas, black dots on V-Ray render
Hello, When rendering obtained white dots. Tell me what could be the reason?


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