I see a few options: 1.) DX realtime shader in Maya or Max's viewport 2.) Marmoset Toolbag: http://boards.polycount.net/showthread.php?t=61346 3.) any popular game engine (Crysis, Source, Unreal 3) whereas Crysis seems to be very easy for WYSIWYG realtime feedback turntables are something very classy from the film/ render…
they probably all do in a way. - Unreal seems to be the most discussed and used (lots of tutorials, training DVD's, biggest knowledge base) - Crysis recently proved to be an impressive tool for artists http://www.game-artist.net/forums/scene-movie-competition/9540-scene-movie-results.html the first and last place were done…