You are both right Ulco and Kadri.
I am still undecided a bit.
On one side it's already a chosen "feature" of the film: 99% or more Terragen-rendered.
On the other side the render times...
Anyway the film will not be finished faster with more postwork and faster rendering because in intensivated postwork I would start at almost zero knowledge and with no professional software (only a bit hobby stuff like magix...). To bring the project to the actual state of knowledge and quality I can work with in TG now, I'd need about the same time. I guess it would need about 2 or more years to learn postworking. In that time I have rendered the scene 10 times in TG
In my alien teaser and the smoking doctor in the shuttle you can see that postwork-fog or smoke is possible in general. But especially the spaceship corridors are not convincing in my eyes. Somehow in the full TG render I can see that the fog (or the clouds´) are really there.
I will see, what the future brings.
I'm still working on my small knowledge about blender, wings3d, poseray and others as well...
At the moment waiting for renders is quite relaxing... Otherwise I would forget to eat and that there is a real sky with a sun and clouds outside
TG-workaholic-syndrom, you know?