Questions tagged [noise-reduction]

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

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49 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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2answers
72 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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12 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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82 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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27 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
47 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
65 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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0answers
19 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
380 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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2answers
155 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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0answers
69 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
33 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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0answers
28 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
524 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 ...
2
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1answer
49 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
40 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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29 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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0answers
86 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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42 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
460 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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0answers
17 views

Some form of noise on my sculpture when animating the camera moving around it

New to sculpting, made some kind of monster with a bunch of geometry, in eevee it looks mostly fine. But in cycles it has the lighting I prefer. Only problem is when animating a camera moving around ...
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1answer
37 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 ...
3
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1answer
277 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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0answers
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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4answers
1k 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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1answer
306 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
731 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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1answer
109 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
3k 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
57 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
107 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
857 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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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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2answers
870 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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1answer
145 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
801 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
121 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 ...
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0answers
102 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
2k 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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1answer
50 views

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 ...
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0answers
267 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 ...
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1answer
326 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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0answers
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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1answer
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
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1answer
974 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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0answers
217 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
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3answers
2k 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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0answers
48 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 ...
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1answer
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.