First project using Octane AND C4D (normally maya guy)....
I'm running into issues with the Cryptomatte output going into Nuke. When I apply the cryptomatte node in Nuke to break out my objects and then comp them back together, I notice some fringing in the alpha. I fiddled around with unpremultiply in the Cryptomatte node in Nuke but it doesn't seem to help. I premultiplied each one before I merged and the same thing. I then tried using the Take System inside of C4D to try to help me out but I noticed in one of the takes, I see a black fringe in the Crypomatte object pass in the Octane Live Viewer. I'm wondering if something is wrong with the crypomatte functionality. I've tried various OctaneEXR compressors (RLE, ZIPS, DAWA, etc).
Separate issue... I figured since my cryptomatte passes weren't working as I would have thought, I tried the old Render Layer ID passes. When bringing those into nuke, I noticed the colors were muted.. (eg, not 255, 0, 0 for red). When I shuffled the Red to Alpha, the alpha was not at 100% black and white. I tried using a Grade node to boost the gamma on the Alpha but then I saw artifacts starting to appear in areas where it shouldn't. Is there something I should be doing differently?