So odd. I wonder what is the difference? The only thing I believe is not the same is perhaps our OS? I’m likely the only one on a Mac. Though that shouldn’t interfere with the math under the hood, right?
I have started the app over, and re-rendered on each of the layers as you guys suggested. Then I started this screen recording: https://youtu.be/QZ3YQIYpvQs
You’ll see that if I get the combined image from the Guitar layer, and alpha over the background, it works. Then if I use a mix color node instead of the alpha over I get a not transparent result, but still not the exact output (looks like the noisy image output instead?).
Very weird. If you guys have any ideas let me know. I’ll keep working on the course likely tonight, but this one is stumping me 🤔
I might try reinstalling Blender later too. We’ll see.