Questions tagged [noise-reduction]

Questions considering the process of reduction of noise in final renders and/or texture baking.

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1answer
213 views

Noisy scene even with 3K pass

I know many many people have asked this before, but i really can't understand what is wrong... I've tried everything: raised passes up to 3k, added denoising, indirect clamping, multi sample ...
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0answers
330 views

Cant remove fireflies around emission object (volume scatter)

Ive tried everything turning off caustics, ive turned on simplify, denoising is on, multiple importance is on, increased transparency, filter glossy all the way up to 10 (although there isnt glossy ...
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1answer
2k views

Blender Cycle too much noise [duplicate]

I've spent all my morning trying to get rid of all fireflies in the final render, but the result still shows too much noise. How can I fix it (without changing materials)? Thank you.
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1answer
554 views

Getting low resolution render images [duplicate]

When i am rendering my scene in 1920×1080 at 100℅, and with a sample value of 500, I am getting a low qulality image which got rendered in just 8 seconds. How can I fix this!
2
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1answer
330 views

Why do I have 'glitched' areas in my render after enabling denoising? [duplicate]

I am a newbie to blender and i found a 'Denoiser' option and decided to use it. I found out its function but it seems to create these 'glitched' areas in one of my renders. What are they and how do i ...
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1answer
625 views

How do I set the Seed value to 0 under the Sampling tab?

The seed value keeps resetting to the default value after I set it to 0, once I render a frame. I want to eliminate all noise from the final rendered image.
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0answers
29 views

Why is there still so much noise? [duplicate]

I added a portal to the the window and put the size to 9.353, and also rendered the samples at 2000 and there is still noise. do I need to portals for this?
5
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2answers
2k views

Shadow-catcher stays noisy even with Denoising - also very dark

I am facing some issues with the shadow-catcher and denoiser in Blender 2.79. Denoising doesn't seem to have any effect on shadow catcher shadow. If I turn off shadow catcher on ground plane the ...
3
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1answer
1k views

Partially high noise using glass material [duplicate]

I created a simple bottle and applied a glass material using the new principled shader. When it comes to rendering the surface of the bottle turns out incredibly noisy, except the part on the front ...
2
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1answer
702 views

How do I get denoising to work for all OpenEXR passes?

With the new Denoiser function, we're finally able to drastically reduce the samples in our scene without having to worry about the noise to much. I'm rendering my scene with less samples now (500 ...
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0answers
69 views

I always get some noise in my images made with cycles

There are also another problems with this image, but the noise I get in all my renders, I don't know how to solve this, could you help me. My renders also takes too long to render, even if it is a ...
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2answers
3k views

How to reduce the glossy noise? [duplicate]

I am using a lamp with shader glossy, without the lamp the scene is good, but when I bring the lamp with the shader increases the amount of noise. what do I do?
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2answers
159 views

Is it possible to have more fireflies at the same time I use more samples?

I am referring to the white dots that appear in glossy objects. I moved a little the metal carpentry for the second image, and I got less noise in the horizontal ones which are on the top, but for ...
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1answer
656 views

too much light causes noise [duplicate]

Usually happens the opposite.. but today I have too much noise caused by too much light! (at least, I suppose It is because of that...) I have also Volume scatter and absorption applied to a ...
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0answers
40 views

How to clean white spots on an image? [duplicate]

I was watching a tutorial on making a cup, (link in comment) and towards the end, he says make Clamp 0.98 in order to remove white spots on the image. I added 0.99 to Clamp Direct (2.78c) and I still ...
4
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1answer
3k views

How to reduce noise in really dark scene

So I've been working on this one scene for a while now and I just can't get the look that I want. It is supposed to be a bar and therefore pretty dark. For some reason, nothing I do seems to reduce ...
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3answers
1k views

Noise on cycles render [duplicate]

How do I remove the noise on renders? All my output has noise on the shadows. This is a png render using cycles renderer.
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0answers
341 views

Image rendered with GPU shows less noise than CPU

This is an issue (or feature?) I experience with the blender version 2.76b from the offical ubuntu 16.04 xenial xerus repository. I can't reproduce it with 2.78c or 2.76b build from the blender ...
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2answers
561 views

Noisy picture with no fireflies

I made this picture with 6000 samples. No fireflies but still so noisy. I read a lot of articles to get rid of fireflies but I just need to clear my pic. Any idea?
1
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1answer
572 views

noise when using fire simulation

so when I created the scene without the fire I got a clean image with no noise (using 256 samples),but when I added the smoke simulation and rendered a frame it became really noisy around the fire and ...
1
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1answer
803 views

Removing fireflies from render

Relatively new to Blender, completely new to stack exchange. Creating a dimly lit scene using a large amount of emissive objects. Render keeps coming up with tons of fireflies in it. Scene is dark ...
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1answer
427 views

Cycles: noise in dark sections

I'm having trouble with noise. Its mostly in dark sections, it doesen't look to bad in the picture but that's with 3000 path tracing samples. It's rendering at 1920x1080 and using filmic blender at ...
2
votes
1answer
202 views

Toon material present some kind of deformation, jagged, spike noise

Please take a look at the images and tell me if there are any way to have a perfect transition between colors and get rid of that noise marked in the last image. There is a way to make that plane ...
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0answers
299 views

Noise in a render with just emission

In my render as seen is lots of noise in the background. But I only am using emission and transparent shaders (transparent at pure white). The noise only is visible in the final render, not if render ...
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1answer
223 views

Emission material problem

Good day! When I use Emission material on objects - reflections turns out very grainy in rendered results. This does not happen with lamps. What is the best solution to remove fireflies in a ...
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0answers
91 views

Much noise when reaching a certain frame [closed]

I'm working on a project of my own, maximum detail as possible (it's to see how far I can reach details in a render optimizing the maximum possible) To the question. I have a video right now on 1024 ...
1
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1answer
2k views

Texture baking noise reduction with filmic-blender, clamping does not work?

I have a house interior model which I want to use both for high-quality renders and for converting to a web viewer. I've been experimenting with filmic-blender, and love the effect on the renders. My ...
1
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1answer
313 views

Cycles option to merge multiple renders instead of one big render?

From this answer: Why do fireflies increase with number of samples when using a hdri light source? It seems like you can get much nicer, faster rendering with low samples, image merging. However, I'...
1
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1answer
491 views

Blender remove fireflies (Substance painter node)

I have a problem here on my last project with noise. For some reason I have some white dots on this render, do you have any idea how can I fix it? On my scene, I have bean used portal lights for each ...
1
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0answers
103 views

Sampling difference between Cycles 2.74 to 2.78a?

On Friday, we setup six machines to act as our render farm for a short (3000 frame) animation. All machines were loaded from a single saved blend file on a network drive. Five were Windows machines ...
1
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1answer
892 views

Cannot get noise free realistic render in blender cycles [duplicate]

I am a beginner modeler, trying to get realistic result. I have tried my best but i cannot remove the white spots from my scene in cycles. Lighting is not looking realistic. Please help me how can i ...
0
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1answer
986 views

Problems With Incredibly Noisy Renders In Cycles

I'm attempting to create a space station hallway in blender Cycles as concept art for a game. After modeling the entire station, I decided to do some simple test renders to see how the lighting would ...
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0answers
58 views

Strange color noise in diffuse direct at material edges [duplicate]

I am getting strange color noise in my diffuse direct passes. It shows up at the edges of the model, and at material boundaries on the model. It happens even with basic shaders (just diffuse mixed ...
6
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3answers
3k views

Noisy depth of field

So I tried one of the Blender Guru tutorials, which ends with depth of field settings. The blurred lights are however too noisy: Which is strange, because when I turn DOF off, the distant droplets ...
7
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2answers
1k views

How to reduce noise on transparent animation?

I am making an animation(in cycles render) where object is converting from diffuse to transparent(with 0.9 value on mix shader). I am using branched path tracing (with square samples) Below is the ...
3
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1answer
279 views

Painting with weird noise

I'm new regarding painting a model in Blender, I had some difficult with making a texture to paint, but when I did that, while painting this weird noise appears and I can't seem to find the solution. ...
2
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0answers
187 views

Glass issue, trasparent vs holdout shader

I have a problem with the transparency shader. I need to use it combined with the glossy one, mixing using a fresnel factor. Unfortunately I keep getting the same result...an annoying black area. ON ...
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2answers
341 views

how to remove noise? Sample and Light paths do not change anything! [closed]

Same result regardless of the type of lighting.
1
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0answers
24 views

Weird dots in my mesh [duplicate]

so I'm making a drink scene, but it looks like there are very weird dots around, near the glass. It seems I need to do something to get rid of the white dots.
3
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1answer
4k views

Noise in Cycles Interior Scene

I am fairly new to blender and wanted to make something in Cycles, with the same kind of white lighting/style as this: I modeled a little train station and rendered it in Cycles. It was incredibly ...
2
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2answers
668 views

Cycles fireflies with police lights setup

For an animation project I'm working on, some vehicles with a warning light - these plastic ones with a rotating mirror inside which you can find on top of police cars, firefighter trucks (blue) or ...
0
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1answer
941 views

How can I get rid of all this noise [duplicate]

I want to render a scene where light shines through a ball with holes so I get a dot-pattern similar to a disco ball. (see pictures) The problem I have at the moment is that my render is very noise ...
3
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1answer
6k views

What value should I increase to reduce noise for subsurface scattering, volume scatter, etc.?

I'm on an AMD machine, so GPU rendering is off the table, but I don't mind a lengthy render as long as the end result is good. So far I've tried: Rendering at 5000 samples Various indirect/direct ...
9
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1answer
538 views

Same rendering gives different noise amount

I usually render my single frame projects with the SheepIt-Renderfarm as animation of low-sample frames. But I experience great differences in the noise amount between some of the frames. For example, ...
3
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1answer
224 views

Noisy edges on my animation

I'm rendering an animation and don't know how to smooth these noisy edges - sampling is also high. I tried clamping to no avail.
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0answers
627 views

Why is my Cycles rendering grainy?

I think the picture speaks a thousand words:
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1answer
872 views

Using Bilateral blur to reduce noise on already rendered result

So I rendered some 1000 frames. It took a while. The noise is a bit too high and now I want to reduce it with bilateral blur node ,but it is not working correctly. The frame sequence works as an ...
6
votes
3answers
3k views

Why do fireflies increase with number of samples when using a hdri light source?

I have a plane with a simple diffuse material. I use an HDR light source from Greg Zaal. The world setup is as simple as this: When I preview, the noise seems to increase with the number of samples. ...
4
votes
2answers
4k views

Fireflies / noise on glossy material

I have a bunch of glossy balloons lit by a sun lamp and the world (Background Sky Texture). This is the nodes setup. After rendering I have the image below. When we look at a more detailed level we ...
3
votes
1answer
2k views

Volumetric cloud render noise in Cycles

I'm rendering volumetric clouds using Procedural cycles Clouds shader. I'm getting a good result, but with a strange noise (middle bottom screen): It's about 180 passes. As you can see everything is ...