Hi, Burnin, thanks for the reply. I think you already showed me the GI passes in another post and they do work indeed, but the ID passes shown here don't seem useful for compositing. What I'm used to from Modo, and I've seen videos of Corona for Max doing the same, is that you set an ID for either an object, or a material tag and you get a Black and White mask, like an alpha for your ID tag. Also, the mask is antialiased the same way the main rendering is, so you don't get those ugly fringes, when you use the mask in post-pro.
The problem with the ID instance you showed here is, that you can never get a perfect mask from that output. If you use the magic wand in photoshop, or some kind of color range selection, you always get fringes around the borders, unless you have a B&W (or greyscale, to be more exact) output, that you can directly use as a mask, or unless you have at the most 3 masks per image, each one confined to either the R, G or the B channel (like vray does it). Those can then be extracted and used nicely for precise masking in post.
Now I've tried a workflow, where I would do the beauty render in Corona and render the masks in Cycles or Blender Internal, but those, while they provide options to render those masks, do not antialias them, which makes them pretty useless from my point of view.
Corona definitely has the feature already in other versions of the product, just not the standalone one, from what I understand.
