Questions tagged [noise-reduction]

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

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How I clean up the noise in this render (and aliasing)?

This is a dumbed down version of the project I'm working on. The real thing has product logos embossed on the cube, and I'm not only getting a lot of noise, but I'm getting a bunch of strange aliasing ...
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-1 votes
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19 views

Excessive noise in rendering

I'm starting to work with Blender, and I'm on a project for my work. I'm rendering images with 2 minutes, but I can't remove the noise. I'm testing with renderfarms and although it renders faster, but ...
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23 views

Is there a way to isolate single objects for more Cycles render samples?

I'm animating a large scene, i.e., with many objects and light sources, with Cycles and struggling to solve noise issues. It's an outdoor scene with a real world twilight HDR sky and the darkness of ...
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27 views

Reduce noise in refractive caustics [duplicate]

I'm trying to smooth these puppies out. I don't need realism, just no noise. The material which light is passing through is a Principle BSDF. Using Cycles X with no reflective or refractive caustics ...
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1 answer
305 views

Eevee rendering noise with MToon transparent material

Blender 3.1.2 I have a VRM model I've imported into Blender. Both in the viewfinder and rendering view the glasses of the model have distinct noise. It is not a texture issue, the texture file does ...
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1 answer
108 views

Much more Noise in the whole scene with a Light Points?

i am currently working on a steampunk castle and have the problem that the entire picture becomes significantly noisier as soon as I put normal points of light in the lamps. I set the light points to ...
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1 vote
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Why is my render blotchy and how do I get rid of it?

So I have this scene I'm trying to render and I noticed no matter how many samples I use, I can't get rid of the blotches on it. I used 1200 samples in this render. I'm using cycles. This took 4-ish ...
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1 answer
32 views

Why Im getting this "rain" noise in cycles

Hey guys Im trying to render my projest but Im getting this rain nose I don't know why, any suggestion ?
1 vote
0 answers
71 views

Combining low sample renders has more noise than one large render

I am trying to create a script, that would allow me to merge multiple images, rendered with different seeds and different sample amounts into one image with a higher sample amount. The script is using ...
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24 views

Can we change Noise seed per sample in Cycles?

In cycles, I have noticed that instead of taking 1000 samples, we can take just 10 renders of 50 samples each with different noise seed and average them externally, the noise goes down A LOT. So, is ...
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63 views

texture baking artifacts

im having issues with baking a texture via blender. im only using a bsdf node with white and the sun as a light source. somehow it keeps coming up with these artifacts instead of being smooth with ...
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38 views

Have strange noise in compositor in Cycles (Cycles X too)

I make render of smoke in cycles in blender 3.0. Render location in eevee and mix it in copmositor. BUT in render a have no noise and have it in copositor. How I can fix it? Files in attach - ...
1 vote
1 answer
45 views

I cant find denoising but I have blender 2.90.1

So I made a roblox gfx and it has denoising, but I made a new one, and it doesnt. I have no idea why- and the difference is very clear. You can also see that the second one is kinda transparent. And ...
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2 votes
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121 views

Ambient occlusion causes serious noises in EEVEE

My EEVEE render looks okay with Ambient Occlusion off: But when I turn it on: The noise gets really bad: No matter how many Samples I set (it's almost as noisy in 16 samples as 1600 samples). Is ...
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3 votes
0 answers
168 views

How can I render a ball with equirectangular camera?

Firstly, I'm a first time user for Blender. I want a equirectangular image so that I can create a texture to use on a sphere object on my Unity project. I'm searching and trying for hours. Here what I ...
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192 views

Noise in the animation render

So I did a render for a small animation that I need to put on a website ( needs to be small in size to load fast ). I used 500 samples in cycles with Denoise in this render but it seems to get some ...
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2 answers
142 views

How to denoise night scenes in blender?

Pls help, I've been struggling to reduce noise in this scene and noise ruins all well-done textures and emission materials. Funnel lights are points along with sphere emitters to imitate lamps. Even ...
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15 views

Stains on white walls_interior render_denoiser [duplicate]

I am trying to render an interior image but I have problems with the white walls. As shown in the image attached there are "stains" caused I think by the DENOISER. (I guess so because of a ...
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75 views

Scene is noisy and the noise barely changes from 750+ samples

I have created this blockout of a hobbit hole but when i try to render it it's very slow and quite noisy(denoising used) even without volumetrics. I would just crank up the samples to solve this but ...
1 vote
0 answers
114 views

Weird noise-like textures on roughness textured surface? (Cycle render)

So I have this metal object that has roughness textures on it. It looks okay on the viewport. But when I render it somehow there are some noise textures on it. The noise especially is on the shaded ...
1 vote
1 answer
94 views

Donut glass cup render has too many grains and speckles + denoiser come out distorted, shadow is also too opaque. What settings may I try out?

I feel I am nearing completion of the tutorial but am still having gaps in knowledge on how to render light properly. 2.92.0 blender file: https://pasteall.org/blend/6474d6f8bd5f4b1abbabaa41478e7e6a ...
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1 vote
2 answers
421 views

Render shadows without denoise on a transparent background in cycles [duplicate]

I have a problem with the graininess that appears in the shade. I want to render an object with a nice and clean shadow. The result is a png with a transparent background. Render in Cycles engine. I ...
1 vote
0 answers
556 views

Speed up Intel denoise

Currently I'm rendering on cpu, because at the time of writing it's faster for me (tested it a few times). I know this is kind of bad and I should get a better gpu, but well, currently it's not ...
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58 views

White Noise after Rendered Scene

When I render, white like bricks come up in my scene and start to affect the sand textures. I've researched I thought it was a noise particle from using something transparent like water but the noise ...
3 votes
2 answers
874 views

Mist pass looks noisy

I have a following problem: when I render my final image with mist pass, the mist pass itself becomes noisy, see in these images: Mist pass combined in image: Mist Pass itself: Could the problem be ...
0 votes
1 answer
487 views

weird yellow and red grains on my renders [duplicate]

I am working on a scene in blender related to Minecraft but for some reason my render image have small yellow and red spots sprinkled which are barely noticeable , is their a way to fix it. it might ...
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25 views

How to make the glittery effect cleaner on cycles render? [duplicate]

I´m finishing this study but I think the gliterry party is a little off, kinda blurry. Does anyone have any tip on how to improve it this final render? Thanks a lot! I mean this part (the upload here ...
4 votes
1 answer
600 views

Strange Glass Reflectivity in Wine Bottle Scene

I am testing out some materials and put together a simple wine scene from some downloaded assets. This is the render: Anyway, there are parts of the render that look pretty unnatural. I've pointed ...
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0 votes
2 answers
931 views

Can't find the denoiser in view layer

I am using Cycles and yet it doesn't appear. It doesn't work even when I'm using the denoiser node. please any advice would be welcomed.
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0 answers
178 views

Very noisy indoor scene mystery

I'm working on a indoor scene in Cycles Blender 2.90 with the Nishita sky as light source coming trough the windows. For the glass material I used Blender Guru's glass hack, but I'm sure the glass isn'...
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1 answer
53 views

I connected colour to composite node directely, and there is a noise

I've found a noise in my image, though (ideally) it should be perfectly clean. So I made an experiment. (Blender version 2.90.1) New file, I set the render size 40 x 40 and changed "View ...
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33 views

How to get rid of this noise?

im making a 3D animation of two glass hands cracking, but as Im getting to the point of sorting the lighting for the scene my glass material is giving off a large rectangle of noise. Im using evee ...
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1 answer
2k views

Cycles noise no matter what I do, and the denoiser makes it look cloudy

I realise so many people have asked this question so many times, but I just can't see what I'm doing wrong here. I'm on Blender 2.83.2. I have a simple scene with a room and some objects, some with ...
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2 votes
1 answer
125 views

how to reduce clump of strange noise in render?

I have a strange clump of pixels on a model added into some video. am experimenting with animated depth of field to get the model to defocus when the camera does, the pixels stay in focus and seem to ...
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2 votes
0 answers
62 views

Excess noise in cycles render and odd denoising results

I'm trying to do some renders of a dark room, but there's quite a bit of noise despite me setting it to 128 samples. When the denoiser kicks in, it fixes the noise but makes the scene look completely ...
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30 views

How do i remove these splotches from my rendered image?

I am a beginner that just did the doughnut tutorial
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324 views

Unexpected noise/pixels of render preview in Viewport Shading

I'm really new to Blender and started watching a playlist from Youtuber Blender Guru, the one about making a donut. Link is provided below to the specific video: https://www.youtube.com/watch?v=...
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0 answers
173 views

Object shadows having lines doubled

The shadows of the objects seems to be doubling up and even when moving the object around it flickers. Eevee Cycles
-1 votes
1 answer
1k views

Noise in rendered image even with 1000 samples [duplicate]

Rendered with 1000 samples in cycles. What can i try to get rid of it without losing the quality of the image?
1 vote
1 answer
58 views

Extreme noise with portals indoors

my renders always turn out to have a lot of noise when indoors, what should i change? i know the samples are low, but no matter how high i set them, there is a lot of noise. Should i use the clamping ...
1 vote
0 answers
55 views

why my indoor scene is so noisy? [duplicate]

yeah i know that the sample rate is low, i increased it to 300 and it still was noisy, i think it has something to do with the indirect light, right? I dont know if i need to give more info, im ...
3 votes
1 answer
673 views

Combining denoise node with other nodes in compositor?

I'm rendering a thing in cycles and I think I put the Intel denoise node in the wrong spot, because it won't mix with the rest of my nodes in the composite. I've been using Blender for a couple of ...
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0 votes
0 answers
24 views

Final render is too noisy [duplicate]

I've started tinkering with Blender a few days ago and finally produced my own rendered image. The only problem is that the final render is way too noisy to use. It took around 1-2 hours to complete ...
3 votes
5 answers
4k views

White Noise in Blender Z Pass with alpha value in Mix Shader

I am trying to get the depth value using z pass from my scene which is a simple head model, but while rendering there is white salt and pepper noise in the hair and eyelash. I have saved in both png ...
1 vote
1 answer
597 views

Luxcore noisy render

When I try to render something with Luxcore it get really noisy. I read that Luxcore was working as a camera so if the image is too dark you need to add more light in the scene or it gets noisy. I ...
1 vote
1 answer
971 views

How to Use D-Noise in the Compositor?

Basically the question. Usually, I let Blender save some additional render passes (mostly ID masks) together with my main rendering for later, in-depth compositing. In the compositor, I pick the image,...
0 votes
1 answer
232 views

Fireflies plague my render! [duplicate]

I'm trying to render out an animation, but I keep running into a lot of fireflies. I would like to try to avoid the denoise addon since Im rendering an animation, but at the very least I would like to ...
1 vote
1 answer
5k views

Blender 2.8 eevee rendering noise

I am seeing a lot of noise when using eevee to render. Attached is a mesh where you will see the noise is very heavy at the bottom of the iconosphere. This noise is only seen with metallic materials. ...
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0 votes
1 answer
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Different render results with cycles in files created pre-2.8 and post-2.8 - extra noise in 2.8

I use a node group (see linked blend files) along with extremely limited numbers of bounces & lighting to achieve a certain non-photorealistic effect in cycles. This effect has previously resulted ...
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0 votes
1 answer
161 views

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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