Just a follow up.
I managed to use the Perspective mode in Octane's projection node using my camera to project from which then let me use whatever subdivision level I wanted.
To do this I set it to Perspective, then the Position setting to World Space. Then I set the scale values to:
X = 1
Y = 0.56
Z = -4
- CINEMA 4D_2018-10-20_22-21-22.png (6.23 KiB) Viewed 4321 times
I managed to find an old project I did where I had set up exactly this same set up but the issue which gets me close enough but I'm never going to remember those exact settings whenever I need to do a camera projection and it's a but inaccurate.
After reading the manual I saw that it takes the world space coordinates and divides the X and Y coordinates by the Z coordinate which I'll be honest I don't fully understand the reason for this. I'd love to hear why this particular setup is useful and why the x and y coordinates should be divided by z for projection.
Like I say, it would be enormously helpful to others I think if there was a different setting which is more similar to C4D's own Camera Mapping setting (which is useful as it has film back settings and pixel aspect ratio settings etc).
Thanks