Questions tagged [noise-reduction]

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

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15 views

Lower noise at classroom scene [closed]

I would like to know why classroom demo file's scene renders less noisy compared to default blender's 2.93 startup scene? (The classroom file can be found at https://www.blender.org/download/demo-...
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31 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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2answers
69 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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31 views

Is there an addon to properly de-noise a baked texture?

I'd like to be able to de-noise a baked texture in Cycles. Is there an addon or a technique that does this better than the compositor? I noticed the compositor leaves a lot to be desired when it comes ...
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151 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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34 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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29 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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11 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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65 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 ...
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18 views

Multiple Importance has problem with glass

I have problem with Multiple Importance for Point Light and glass material. Look on the pictures. First picture depict active multiple importance on the all point lights and second deactive multiple ...
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0answers
19 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 ...
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15 views

Blendrer 2.92 cycles producing weird white noise-like artifacts, but viewport render seems fine. Can anyone help me out?

This is the final render idky the image is being degraded like this. Up until about 40 samples it seems fine then the white starts forming
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2answers
185 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 ...
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2answers
398 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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1answer
62 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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3answers
10k 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 ...
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4answers
2k 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 ...
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17 views

Is there anyway to reduce an image size without getting noise?

i was triying to reduce an image size right in compositor, using a scale node, but when i render it the image get a lot of noise. i tried reducing to the same size in other software and it works ...
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0answers
268 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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32 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 ...
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0answers
165 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 ...
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1answer
174 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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21 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 ...
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1answer
467 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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0answers
97 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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1answer
41 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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32 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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1answer
1k 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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1answer
62 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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0answers
46 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
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0answers
58 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
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1answer
759 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?
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1answer
42 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 ...
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0answers
49 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 ...
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1answer
418 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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1answer
815 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,...
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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 ...
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1answer
5k 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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1answer
419 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 ...
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1answer
155 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 ...
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1answer
4k 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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1answer
60 views

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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1answer
121 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 ...
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1answer
1k 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 ...
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2answers
1k 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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0answers
110 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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1answer
154 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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0answers
928 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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0answers
133 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 ...