Octane Environment and Visible Environment are great for sky backgrounds, but have their limits with animation, because they are tied to the camera position.
...i.e. if you dolly or track, the whole world moves with you. Which looks crazy.
So... I've created a sphere (Sky Dome) around the scene, and textured it with an HDRI through an emission node to get the same background, and all stays still regardless of camera move. Perfect, but with one problem: It blocks out all other environment light, and Octane Daylight.
This does work pretty well as an environment on its own, but it creates a lot more noise, so I'm trying to optimise...
Question: Is it possible to make the sphere transparent, so it lets environment/Daylight through, has no effect on the scene, but still shows as a backplate?
Thanks.