Blender 3 - Cycles Render Question

Hi all,

I`m doing a tutorial from tutor4u. The vintage microphone one. Got the modeling done and have set up the lights, camera and materials.

Problem is when I go to do a test render with Cycles its taking ages to render anything at all. Its quite a basic scene. Pretty much just the mic and a floor so I don`t think it should be taking so long.

It says it`s going to take like 10 hours to render so something is not right.

Are there any tuts around to show how to set up Cycles/Eevee etc for rendering? If any of you would have some info on it that would be great.

Plus it`s rendering the images at 1920x1080. Where can I reduce this image size?

Ive been experimenting with Blender for some years now so Im not totally new to it. Plus the renders I did in the past, although quite basic, rendered in a few minutes.

System is:

RTX 3050 8GB
Intel i7-4770K
16GB RAM

Would appreciate any help. :slight_smile:

A few suggestions to narrow down the issue:

-Is the render also slow in Eevee?
-Do you have some really heavy modifiers, like subdivision surfaces with lots of subdivisions?
-Is the scene lit with emissive materials, with a large number of light sources?
-Is the scene completely encased in a room with only a small entry point for the light, like a window?
-Have you increased the number of samples and/or set the noise treshold really low?

-Are there objects with a bunch of long, narrow polygons in a diagonal? Those mess with Cycles’ optimisation system. If you have them, try splitting them by adding edge loops and make them roughly into squares.

You can change the render resolution in the output settings (the tab right past render properties).

In addition to the suggestions of @etn249: Have you set the correct settings for your graphics card?

You can set the size of your renderings here (resolution X/Y and percentage value):

Here are my start settings for comparison. I only have a RTX 2060 and Cycles renders fast as hell for me

:slightly_smiling_face:

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How many samples and light bounces are you using?

First off, thanks for the replies guys.

@etn249

I`ve not tried Eevee tbh. Only tried Cycles so far.

There are subdivision surface modifiers on the model but they are not set to high values. I`ve really just followed what tutor4u has done in the tut.

There are 3 lights in the scene.

No, there`s no room. Just a simple plane for the floor.

I`ve not really changed anything like samples or anything.

No, there no objects with long, narrow polygons. Nothing massive anyway.

@Ruwo

Yes as far as I know the settings for the graphics card are set correctly.

Will check out your settings. Thanks.

@Chuk_Chuk

Viewport Max Samples are 1024

Render Max Samples are 4096

Think this may be too high.

After I posted guys I re-searched google using a different search term and have come up with a few tuts to get the best settings for rendering with Cycles (Eevee too)

One from Josh Gambrell which has some really good info so I`ll also try going through that and see how I get on.

He also showed where to set the resolution of the images.

Really appreciate the help guys.

Cheers. :slightly_smiling_face: :+1:

Just popped back to say thanks again guys. Between trying some of the suggestions here and following Josh Gambrell`s advice my render times are massivly improved. From what was going to be hours is now seconds.

Ive changed the render settings so how do I save them? Or will they just remain as they are now theyre changed?

Only problem with my render now is that its very dull. Ive done exactly what was done in the tut.

Any ideas why it`s like this?

1 Like

Check your scale. If you have set your lights at the same intensity as the tutorial, but your scene is 10x the size, then the lights will appear 10x dimmer.

1 Like

Thanks for the reply. I think my scene should be (roughly) the same as in the tut.

I changed the intensity of the lights as suggested but it`s still the same.

What are your clamp settings?

Ok… noob question. Certainly in 3.0.

Where are clamp settings?

In the render panel under light paths

Cheers.

Settings are:

Direct Light - 0.00
Indirect Light - 10.00