I’m sharing an iray studio setup with multiple HDR environments I created with HDRlightStudio. There are seven different configurations in this one file. You can even switch between them in this single .max file by simply using the scene states option (tools/manage scene states).
Keep in mind, no single preconfigured studio setup will be optimal for every scene or object. Sometimes you get lucky, but most of the time in order to get the best look for any particular model (especially things like vehicles) you need to carefully place the reflections/highlights. That is why applications like HDRlightstudio are lifesavers.
For workflow tips and more on using mental ray, be sure to check out the “Rendering with Autodesk 3ds Max Design and mental ray” youtube channel with Marion Landry.
In addition to it being some neat work I thought the Britney Spears Big Fat Bass Backdrop Making Of article had some great tips for mental ray users. Be sure to check it out.
I went out the other afternoon to practice 360 HDR captures with a nodal ninja. I used my fisheye lens so the resolution on these isn’t terribly high (4k), but they may be useful in some situations (GPU rendering/lighting/product vis/etc.). Anyway, thought I’d share ‘em. Read on for images and download link.