Linked Questions

15
votes
1answer
13k 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?
7
votes
1answer
21k 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% , ...
7
votes
2answers
3k 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 ...
3
votes
2answers
4k 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 ...
3
votes
3answers
4k 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
6
votes
1answer
3k 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 ...
8
votes
1answer
2k 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 ...
0
votes
1answer
925 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. ...
6
votes
2answers
323 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 ...
1
vote
1answer
309 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 (...
4
votes
1answer
299 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 ...
1
vote
1answer
330 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...
2
votes
0answers
80 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 ...
1
vote
0answers
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 ...