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This may be me just being a Blender noobie, but when I try to render a Cryptomatte pass I only get one or two colors, usually green or white, with full alpha transparency for some reason (I had to check in the Image Editor to show RGB only so I could at least see what the pass rendered). The other passes seem to render OK, though.

Is there a setting I need to check or is it a bug? I'm using Blender 2.81a. Thanks in advance. enter image description here

Igor Harmendani
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  • Possibly related https://blender.stackexchange.com/questions/143706/cryptomatte-doesnt-output-nice-clean-edges/144220?r=SearchResults#144220 – aliasguru Dec 17 '19 at 06:10
  • How are you viewing the image on the left side? The correct way of picking the objects would be in the compositor with a view node: image. Otherwise for storing the Cryptomatte you'd save them in a multi-layer OpenEXR. – Robert Gützkow Dec 17 '19 at 09:31
  • @RobertGützkow Thanks, indeed it worked when I used it in the Compositor, but I couldn't get them to work when exporting an OpenEXR, the colors are all different when I open it in Affinity Photo. What I did was pluging the Render Layers node outputs to the File Output node, but I'm sure there's something I'm missing. – Igor Harmendani Dec 18 '19 at 02:08
  • Cryptomatte doesn't simply store color, how it works and what is stored in the multi-layer OpenEXR is explained in this answer. – Robert Gützkow Dec 18 '19 at 07:41
  • I'll read that, thank you – Igor Harmendani Dec 19 '19 at 12:03

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It's because you are using the pick plug instead of the image or matte plug

Hudson Kruse
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