Thanks very much Gutmann, that does work :) and is a useful workaround. I've also opened each of the EXRs again in notepad (first from Blender Octane using the Octane Viewport to save as you suggested (works), second from Modo Octane (works) and third from Blender Octane using the Blender Image ...

I'll also attach the EXR files as saved from Modo Octane and Blender Octane. I opened them in notepad and can see that the layer naming appears to be different. Modo Octane layers referenced with a 2 digit number eg. CryptoMaterialNode00.r and there are more of them whereas the Blender Octane file ...

I'm attaching screengrabs of how the Modo Octane EXR opens in Photoshop vs how the Blender Octane EXR opens in Photoshop, both using the ProEXR plugin (no cryptomatte layer support) and the Exr-IO plugin with Cryptomatte Layers disabled but Cryptomatte Raw Data enabled...

This seems to be an Octane specific problem because I tried rendering the same scene with EEVEE in Blender and it all worked correctly.

Also, I have asked on the Exr-IO Discord where it was recommended that I follow the workflow as described in the video https://www.youtube.com/watch?v=43TRMeQZlzA and the Add-on script at https://www.exr-io.com/automate-blender-exr-elements/

Hi,
I've never used Cryptomattes in Photoshop.
Can you please show me what the expected result should look like once the EXR is loaded in PS?


Yes, here's two screengrabs of EXR files opened in Photoshop using the Exr-IO plugin. The first is rendered with Modo Octane and is correctly splitting ...

I am using Octane for Blender to generate cryptomatte passes. I save the rendered file as multilayer EXR and then open it in Photoshop using the EXR-IO plugin but it is not splitting the cryptomatte into separate layers. I use the same workflow with renders from Octane for Modo and the cryptomatte ...

Seems like the naming of the Normal (smooth) and Normal (shading) passes is flipped when you view them in the passes dropdown menu. So, if you tick Normal (smooth) you actually get Normal (shading) and vice versa.

Good pickup funk. I was so focussed on the item masks being a problem that it didn't even cross my mind that the text polys might be an issue. Doh!

Cheers, Will.

Sorry Paul, it was 2021.1.0.180