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It should work as Mr. Zak says, anyway you can create a viewer node in the compositor, then choose viewer in the UV/Image window and save the image. I connected the composite output node to the origi …

You should use the displace node instead.

In compositor, math nodes work on float values, not vectors and colors, so you have to split the 3 components and perfom operations on each of them. The compare node seems to perform what you're looki …

This issue is that the exported image has been conveted using color management transforms. In short words, the renderer will determine a light value for each pixel, with range from 0 to infinity in a …

If I understand your question, when you render an image and set "use nodes" in the compositor, you can check the "backdrop" function, then Ctrl Shift click on a node to create a viewer and see the out …

It's not a bug, it's the expected behaviour, what you need is to use the "Z combine node". In my example I've set layer 1 into render layer1 only, and L 2 into RL 2. As the blur increases the size of …

Generally Ctrl Shift click on the last node connect the viewer and force a refresh of the compositor nodes. If it fails, you can use an UV editor window, choose "viewer node" and save the result as im …

If you render your object with a transparent background, yuor render will have an alpha output in which the object will be white and the background black. In the compositor you can use this output in …

In the compositor you can connect an Input "Track Position" node to a Distort "Transform" node, interposing two converter "Math" nodes set to Add, to offset X and Y. Transform node has a scale slider …

You can try inserting an add node between the mist pass and the color ramp, to "offset" the focused value. Tweaking the values, positive or negative, you should be able to set the knife pixels as focu …

The top header I can see in your screenshot belongs to a second 3D view window. Turn it to an Info window ("i" icon) and you will find what you're looking for.

This is due to the filmic color management option. If you switch back the view transform to default, you get full white as background. Filmic allows values higher than 1.0, so 1.0 is not displayed (a …

You can turn off the world strenght down to zero, delete all lights, set the color management as standard (sRGB), and use an emission shader set to 1 strenght instead of a principled BSDF.

This is the expected behaviour: if in the post processing tab compositor and sequencer are checked, the output will be overwritten by what is resulting in the compositor and sequencer windows. So, to …

In the Outliner, go to View Layers tab, click on this button to create a duplicate, name one of them Main, the other Shadow. In the restrictions toggle menu, enable the Indirect only function. Put th …