Hi, I'm doing an image for a client using Poser software, but the problem is that the rendering kind of sucks in Poser. Dunno what to do. Should I look for ways of doing nice renders in Poser maybe using plugins or something, or should I export it to 3dsmax? But fixing all the materials would be a tedious job.
The render should have this look:

Code:

http://upload.wikimedia.org/wikipedia/en/0/0d/Mafia_II_Boxart.jpg

Most poser artists can squeeze a lot out of Poser's renderer. (e.g. renderosity.com).
But 99.9% (if not all of them) use post processing techniques in Photoshop to clear up the images.
That's your safest route.