Questions tagged [noise-reduction]

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

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Weird export noise after appending object

I have a planet created in one blender file [A], which I am appending to another blender file [B]. The planet in file A renders beautifuly, while in file B, the render is noisy. I have checked and can ...
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1 answer
2k views

Shadows in render are noisy

Edit: This post is not a duplicate to this question as I am using Blender Render, and not Cycles Render. Blender Render and Cycles seem to have very different options and work very differently. The ...
1 vote
1 answer
6k views

Fireflies. Where are the options for clamping in 2.8?

I moved on to Blender 2.8, and I'm trying to find a way to remove the fireflies in my work. Obviously, you have to use the clamping feature to reduce the fireflies, but I just couldn't seem to find it ...
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1 vote
2 answers
2k views

High noise with emission materials

I'm doing a render where the lights mostly come from emission materials applied to objects in the scene using cycles, I've tried using ridiculously high samples but the noise is still very obvious. Is ...
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1 answer
182 views

Can Cycles take more samples at object borders?

Can Cycles be coaxed to cast more rays in pixels containing a large gradient/discontinuity in depth (or high contrast in brightness)? My scene is fairly simple (effectively an image mapped to a ...
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0 answers
1k views

Glass causes noise?

I've been fighting with noise in my render. For draft renders I clamp the AO bounces in simplify, which clobbers the noise, but also the shadows. And I don't like that. So for a final render I want to ...
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0 answers
150 views

Noise trap - Interior Scene with no glass materials [duplicate]

I want to get rid of the noise but I can't for the sake of god find out what is causing it. I am using an HDRI. I am not using glass materials. I blocked all the HDRI light with objects apart from 2 ...
2 votes
0 answers
125 views

Why is this glass getting blown out?

Ok I have a lot of glass in my scene but these shards I have on the floor, regardless of denoising settings or otherwise, that do not appear clear but rather get blown out into white. Denoise ...
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1 vote
1 answer
4k views

Black dots in render with many lamps

Hi fellas any help with the black dots on the render below? Found some info around the web but nothing helped me out (it was an old stuff in fact). Really dunno what could causing this...
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-1 votes
1 answer
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I have noise and need help [duplicate]

Ok I'm so tired of the cycles noise problem on interior scene. Plese can you help me? I'm in a rush. This is my scene and a process of a 600 samples render (don't need to finish it for you to see how ...
1 vote
0 answers
434 views

Cycles -- Why are my renders so blurry?

My renders are coming out extremely blurry and weird looking, im still pretty new to blender and im not sure how to fix this issue, and whenever I put the samples to higher numbers like 5000 the ...
0 votes
1 answer
433 views

Quick Smoke Causing Grainy Renders

I was messing around a bit with Blender 2.79, and what i found was when i was doing smoke simulations, the renders turned out really grainy with a lot of noise (kind of like scattered pixels around ...
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0 answers
28 views

How can I remove these little artifacts from my rendered image? [duplicate]

I've read that too many reflections can cause these artifacts, but I couldn't find a solution to remove them. My sampling was set to 512.
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1 vote
1 answer
2k views

Denoising in viewport?

Is it possible to enable the new (2.79b) denoising feature in the viewport? It works great for me in renders, but I can't find a way to apply it in the viewport.
2 votes
1 answer
1k views

How to render a night scene [duplicate]

I really need some help regarding rendering a night scene. When i tick the denoising option. My render become ugly where there is a black dirt on the image. As in the image below. And if i untick ...
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0 answers
405 views

How to fix noise in a face mesh

I've created a head surface out of an MRI scan. Due to noises in the scan, some parts of the surface are noisy, mostly around the chin: Any idea how I can fix that? I'm trying different smoothing ...
2 votes
3 answers
3k views

Why is glass material increasing noise, and what to do about it?

I have a quite simple rendering in Cycles, containing some droplets with a standard glass material – only glass node, connected to surface of material node. The problem is, the glass increases the ...
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0 answers
71 views

Noisy Animation

I'm new to Blender. I just animated a waterwheel but the water seems very noisy and grainy. Can anyone help me to sort this out ? I rendered this with Cycle's rendering engine. I don't have a GPU in ...
0 votes
1 answer
3k views

Get rid of /reduce Noise in Cycles Render [duplicate]

Im new to 3D object creation(2 weeks at most) and I was wondering if there is a way to reduce if not get rid of the noise when rendering using the cycles render. thank you for the answers.
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1 answer
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Interior scene has a lot of noise, even with optimized settings [duplicate]

I can't figure out why my scene is still so noise after I optimized the scene / lighting settings. I have the following settings: 1. Sampling: I increased the Sample size to 2056 I'm clamping ...
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0 votes
1 answer
433 views

How do i remove noise? [duplicate]

I tried to make this scene from blender guro tutorial, but i got problem in my lamp which is to noisy. Is there a solution without increasing my samples render? Im beginner for this stuff.
1 vote
0 answers
169 views

My shadows using "blender render" are noisy?

Whenever I make a render in Blender, all my shadows are messed up. They aren't just black, they're black but have a lot of noise. I don't know how to explain it better, so I'll post a render where you ...
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1 vote
1 answer
237 views

How to reduce noise [duplicate]

enter link description here after enabling depth of field i faced with problem of noise. Metal objets especially looks very bad. How to fix it?
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0 answers
34 views

Any way I can remove these fireflies/noise? [duplicate]

I have made a model of an apartment and I am trying to get rendered images from the individual rooms and in the end in orthographic view but no matter what I do there is too much fireflies or noise. ...
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0 answers
123 views

Different number of samples for different parts of a render

Is there any way to use different number of samples in different parts of the scene? I'd like to have higher number of samples only where the glass material is but lower on the rest because I dont ...
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0 votes
3 answers
12k views

Noise on glass in cycles

I cannot get rid of noise/fireflies in my glass shattering scene, rendering with cycles. I've tried all of the following suggestions: Increasing Samples (up to 4000, still tons of noise) Filter ...
0 votes
1 answer
281 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 ...
0 votes
0 answers
441 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 ...
0 votes
1 answer
3k 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.
1 vote
1 answer
1k 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 votes
1 answer
389 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 ...
0 votes
1 answer
1k 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.
1 vote
0 answers
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?
6 votes
2 answers
4k 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 ...
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3 votes
1 answer
2k 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 votes
1 answer
1k 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 ...
0 votes
0 answers
71 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 ...
1 vote
2 answers
5k 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?
0 votes
2 answers
169 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 ...
1 vote
1 answer
962 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 ...
0 votes
0 answers
44 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 votes
1 answer
5k 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 ...
-1 votes
3 answers
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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2 votes
0 answers
408 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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5 votes
2 answers
657 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?
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1 vote
1 answer
889 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 ...
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1 vote
1 answer
855 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 ...
0 votes
1 answer
806 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
1 answer
310 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 ...
0 votes
0 answers
346 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 ...