Linked Questions

16 votes
1 answer
18k views

What is multiple importance sample option

What is multiple importance sample option. And the main question is Can It be simulated via OSL shader or in particular glossy shader?
user2439's user avatar
  • 351
9 votes
1 answer
61k views

Render is incredibly Grainy! [duplicate]

I'm new to blender and I started last week. I'm now having trouble with the final results of my render, it looks incredibly grainy. What I have tried so far is that I changed the resolution to 100% , ...
Jeff Teoh's user avatar
  • 327
8 votes
2 answers
6k views

Cycles render, noisy even when using a high number of samples

I've seen other questions around, but none that answered my current problem. I've been working on this scene for a few days, and when I wanted to render it, the produced result wasn't quite like I ...
MicroMachine's user avatar
  • 4,733
3 votes
3 answers
12k views

Image is fuzzy or noisy when rendered in cycles [duplicate]

When I rendered this image it became really fuzzy and pixelated. I have tried to fix this but it doesn't seem to be working. File Here
MCC's user avatar
  • 133
7 votes
1 answer
4k views

Blender Cycles Slow Rendering Interior Scene

I have create a very basic blender scene with Suzanne and a modified cube with no UVs and only basic materials. The scene contains about 3 emissive lights. Using the cycles rendering engine, when ...
Swoorup's user avatar
  • 339
8 votes
1 answer
3k views

Spherical emitter does not illuminate very well?

I remember when I was recreating my bathroom and I modeled the lamp and gave it a glass material, but when I came to the lighting it got confusing. I modeled a sphere in the lamp because in real life ...
Vladimir's user avatar
  • 4,715
4 votes
2 answers
5k 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 ...
user avatar
1 vote
1 answer
5k 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...
Jan Matys's user avatar
  • 534
1 vote
1 answer
1k views

Reflection artifacts when rendering

Sometimes I get these weird white reflections, that don't look real at all. I have a white sunlamp in the scene. Is there something I can do to stop this? EDIT: 10x smaller sunlamp, added glare (...
Noidea's user avatar
  • 1,256
6 votes
2 answers
459 views

Disadvantages of importance sampling

What are the disadvantages of using importance sampling (MIS) for lamps? I mean, apparently it converges faster, looks the same as when not using it, takes about the same time... Why not turn it on ...
Ecir Hana's user avatar
  • 275
0 votes
1 answer
1k views

Why does "render layers" selection not influence the rendered scene in this blend file?

I have my blend file at pasteall. Whenever I try to render the scene with no render layers selected, it says All render layers are disabled and then does nothing. ...
user1833028's user avatar
  • 1,567
4 votes
1 answer
582 views

Circular Light Source Causing Speckles in Cycles

(Blend file is in the comments) I am trying to create a stage in the Cycles renderer. I have modeled a stage light that looks like this. It has a circle with the emission shader to act as a light ...
AMACB's user avatar
  • 273
2 votes
0 answers
85 views

any help with this noisy render?

im not sure if this is the right place to post this, if not i apologize i made this render and as you can see, its very noisy where the chairs cast shadows, any suggestions? im rendering at 300 ...
Daniel Campos Guevara's user avatar
1 vote
0 answers
38 views

Why do I get noise on my scene? [duplicate]

After importing a 3D scene from SweetHome3d (in .obj format), my preview window and also the F12 rendering result suddenly has very much "noise". (Please tell me if that's the correct term, I'm a ...
lathspell's user avatar
  • 185