I created a test scene for corona to get a feel how the materials work. The render took about 1h 11 min. The render of the complex Suzanne shape (the monkey) was noise-less relatively quick, but there is still some noise behind and under the glass cube (with thin walls). And for those of you that look at the details, I made an error in exporting the spheres: they looked perfectly round in Blender as I applied the smooth shading. However, I should have subdivided them just as I did with the monkey.
Nevertheless, I am very impressed with the quality of the render. The downside remains that sometimes the render stops without a clear indication what is wrong. The last time I had to change the global illumination setting from path tracing to HD cache to make it work again. And I would love some kind of preview. Currently I need a lot of export-render-edit cycles with constant switching between Blender and Corona.
