Thanks for the shaderball pBarrelas, looks good.
Out of interest I noticed in the render settings you'd cranked the Highlight compression to 5 and upped the contrast. Is this something you regularly do with scenes rendered with Corona?
Thanks! I'm glad you're finding it useful!
Regarding the render settings, The Highlight Compression is for when you have to deal with over exposed areas. I always use it when dealing with 16Bit images. When I render 32Bit images, this setting needs to be at the default "1" and I deal with it in post.
The Contrast, well, this is for when you need more contrast in your rendered image. I never use this because I take care of it also in post.
In this particular case, I have it set like that, because I'm not going to make any post work on material test images, so I need them to look "finished", if you know what I mean!