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Questions relating to Blenders node editor. The node editor is used for non-destructive texture and material editing; for geometry node editing and for post-processing/compositing.

3 votes

Compositing Layers Have Halos

You have that problem because the alphas of each plate are correlated, as the foreground doesn't overlap the background, it masks it out. Solving it is not super straight-forward but it's quite easy: …
Gez's user avatar
  • 2,230
4 votes

Background can be seen through objects, Alpha Over doesn't work?

You just missed to check "transparent" in the render panel, under the film section. Once you do that, your two renderlayers will have their own alpha channels and you will be able to composite them. …
Gez's user avatar
  • 2,230
6 votes

Post-processing Lightsabers in Blender

There is just one trick for this kind of effects: Scene-referred workflow. (i.e. using physically plausible values for emissions and forget). Instead of going through so much contortions, the most ef …
Gez's user avatar
  • 2,230
2 votes
Accepted

How to mask one image and layer it over another?

It's super easy. Just use the mask as the factor in a mix node. *) Keep in mind that a masked mix will never look like a proper Depth of Field effect. If that's your intention, I'd recommend you to …
Gez's user avatar
  • 2,230