Thanks again Chris. I've done some things like this before with the original Terragen and Blender, and I do remember the hardest part was getting the lenses to match up.
I'm most interested in the actual lens conversion in terms of making a lens with a certain focal length in Blender match up in Terragen 2. I know Blender uses mm focal length just like a real camera, but the nuke export script somehow converts this into a value for the vertical field of view and passes that information into Terragen 2. My hope would be that they simply line up, but that remains to be seen because I haven't been able to run a test yet.
I seem to remember having a lot of issues with having to convert the rotational values from Blender back to the original Terragen because once you pass the 180 degree threshold on an axes, it starts to wrap to a negative value from the other direction. Does anyone know if this is still the same case in Terragen 2, or will a number like -325 read the same as in other 3d packages?
Chris, if at all possible I would like to animate from Blender and continue that workflow by exporting my camera animations back to Terragen. Do you see any reason why this would not be possible? I'd like to stay away from animating anything in Terragen and only tweaking things on the side of Blender.