Hello,
This is pic number 2. This one is me trying to integrate Terragen with Cinema 4D. I made the scenery and clouds in TG, then rendered a backplate and 360 HDR. I exported the geometry very low res as a stand-in in obj format and exported the camera using fbx. Took them into Cinema and used the geometry as a shadow catcher, the HDR for lighting and the plate for background. I then added the big ol' tree in Cinema. At one point I had stuff on the ocean in Cinema too but it looked too busy so I took it out. Cinema stuff rendered in Redshift.
Quite pleases with the way Terragen integrates really well!
Cheers
R