要真正去認識Mental Ray 的Render計算相信都唔易,鬼老有D書專本研究Mental Ray ,有興趣可以睇睇((Mental Ray Shader Writing and Phenomenon Programming Tutorialby Karl Stiefvater ; Rendering With Mental Ray (Mental Ray Handbooks Volume 1)by Thomas Driemeyer (Editor)..etc ))
Well, it doesn't matter which program you use. All you have to do is spend a lot of time and be as good as you can using that software. I've seen many great works from all kind of packages.
Don't worry! 3D programs are getting more and more similar ('cause they copy each other's functions?!), so after you're familar with one program, it's so much easier to pick up a new package.