I don't think that's a problem form a talented and skilled 3D artist.

I don't remember where it was posted, maybe 3dluvr, a thread about software piracy and don't tell me that people doesn't use renderman because it's expensive.
Maya is expensive too and I swear that many of the coolest Images that i've ever seen are made by people wich doesn't own the software licenses (I'm not blaming anyone). great images made by merely teenagers from everywhere. just go and watch some 3D contest site.

you know and all of us know:
You can get renderman anywhere if you like.

I think that to produce those cool movie picture renderings, you have to work as a team and you MUST have a Renderman engineer near you.