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Questions related to compositing nodes available for compositing render layers into final renders in the compositor.

1 vote
Accepted

Use Multiple Image Editors in Compositor

You’re doing everything right. This is just the way Blender works. Here’s how you can make it work: 1) In one image editor choose Render Result from the top-down menu. This will show output from the …
jachym michal's user avatar
3 votes

How to change the color of an image while keeping its nuances?

Here is one of many ways to do this: Add Color ramp node - use it to adjust whites/blacks Add Mix node set to Screen - it will filter out the black parts Connect RGB node and select your desired col …
jachym michal's user avatar
1 vote

Not enough connectors in Render Layers node

You need to enable Denoising Data under Scene Tab > Passes. Then your compositor will include all needed denoising passes. Keep in mind, Denoising data are enabled for each render layer separately.
jachym michal's user avatar
2 votes
Accepted

Viewer Node doesn't show up

You need the Node Wrangler addon. Just enable it in preferences, and you're done. Preferences->Addons and click the checkmark. Remember to Save Preferences. Restart Blender. Done.
jachym michal's user avatar
8 votes
Accepted

Save/Export image from compositing tab in Blender 2.81

One way is to connect the Viewer Node. Then just open your Image Editor, select Viewer Node and save the image. You can save to any format you need .jpg/.EXR are all supported. Note: If the Viewer …
jachym michal's user avatar
7 votes

Compositing Viewer Node No Background

Just toggle one of your nodes off and on again. Viewer/Composite nodes refresh only when there's a change in the compositor. You can use M on your keyboard to Mute/Unmute a node. Or just disconnect a …
jachym michal's user avatar
1 vote
Accepted

Background insertion does not work

This happens when you don't check ✓ Use Nodes in the Compositor. In such case, only the Render Layer will be composited, as you described.
jachym michal's user avatar
7 votes
Accepted

Is chromatic aberration possible in blender

You can fake Chromatic aberration in the Compositor. Just add the Lens Distortion node and adjust the Dispersion value.
jachym michal's user avatar
5 votes
Accepted

In Compositor, is it possible to change multiple node values simultaneously even though ther...

Just add a Value node and use it with a driver. That counts as within compositor, right? :) Add a Value node In value field RMB > Copy as New Driver In Distance field RMB > Paste driver
jachym michal's user avatar
2 votes
Accepted

Colorize AO layer shadows using Blender compositor

You can run the AO pass through a Mix Node before you comp it in.
jachym michal's user avatar
19 votes

Why does nothing show up in the Compositing tab?

In the upper menu, you need to check Use Nodes ✓ Then it will work.
jachym michal's user avatar
10 votes
Accepted

How to properly connect the Denoise node in Compositor?

The Noisy Image output is meant for the Denoise node. But with very low samples, the Image output may give better results. Image output this output comes pre-denoised by the Internal denoiser, if i …
jachym michal's user avatar
5 votes
Accepted

Can I name an output file from an output node?

The Base Path field is only used to specify a folder. To modify the name, use the node's File Subpath in the Sidebar. And this is the result:
jachym michal's user avatar
9 votes
Accepted

How to speed up rendering of transparent areas?

Since 2.9 you can enable Adaptive Sampling. Transparent areas (or pure HDRI) are then rendered with 1 sample only.
jachym michal's user avatar
5 votes
Accepted

Which kinds of post-processing effects and algorithms could be used to try to imitate images...

Looks like digital noise and sharpening artifacts You can use the Blur > Catmull-Rom filter to get a similar result A pinch of Directional Blur might also help.
jachym michal's user avatar

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