Thanks.
My workflow in Nuke is not crazy, I use it to mimic what would happen with a real camera essentially.
First thing I do is creating a fake "LUT" to mimic a real camera behavior. This soften the high values in a similar fashion to what Terragen does in the render view (I wish I could have the exact match though). I also lift the black a touch to be sure that nothing in the picture is totally black.
The biggest thing I do in comp is the Depth of Field, as the one straight out of Terragen still presents artifacts. I like to be able to adjust it afterwards also.
Then I added a subtle lens flare, a soft glint on the highlights, a slight vignetting effect and a camera grain. And a tiny increase in contrast at the end.
That's all. Basically just adding this tiny imperfection we miss from the raw render. I didn't use any passes, except the depth for the defocus of course. All the colors are untouched and straight from the cg render.
I used nuke non-commercial for it and was never bothered by its limitation. This is an
awesome tool if some of you guys are curious about.
I bought the Pilot
here. I strongly recommend
this guy work, this is really well made and totally worth it for the price!
I'm curious to see how fast this would run on your machine too. I am rendering a sequence at the moment, but I will see if I can arrange that once this is done.