it is easy: high PT samples = bad AA/MB/DOF, good lighting, and vice versa. Then in lighting, high lights multiplier = good direct lighting and bad indirect (GI), and vice versa
It could be good idea to create some sort of flow-chart where people would navigate to what sort of scene they have: ie. exterier/interier/natural light/artificial light/many-few lights/dof-no dof/etc..and in the end would be suggested bracket of values of these paramaters.
I think there is currently lot of confusion in how to trade between PT samples/Light samples, and what would be some sort of “universal” settings akin to traditional unbiased renderers, if one wanted “one-button” solution (or is the default closest to this?)
The flexibility of Corona is amazing, in that, you tweak as little or as much as you want, but currently the guidelines for tweaking are blurry in the documentation.
Good to know this, generally was my experience too. I will market this for few minutes during my talk on Symp.in on Saturday morning, I think there will be some interest for this. I think especially 3d-UN-enthusiasts such as architecture students will particulary like this engine. I still remember my fondness of Octane when I switched from MentalRay in school. There is huge market in this segment, not rich, but huge en-masse, and as long as Corona rocks so much straight out of the box without any tuning, this is what people wanted.