If you look at the black or white ceiling, then there are visible stains after denoise. Could you show what you can do in 11 minutes?
In general, if you do not mind, in this answer, I will express my opinion on the engines.
Until recently, I tried to find the advantages of Cycles, I am not talking about the obvious now - if there is a scene with some very complex material, or I need to do something procedural, then I think it will be easier to implement in Cycles - it is much more flexible in management.
But what a minus I notice is the setting of the light. On the one hand, it is flexible, I see everything that I do, but does it work out as I would like, does it work out as in the other two engines? In my opinion, no, the light in Cycles is spreading as if gently, spreading everywhere. Also, I always have the feeling that the lines and the picture as a whole are kind of “soft” in comparison with the crown, and even with the lux. I also want to note that I think the picture is less natural. According to my feelings, this is caused by greater saturation and “softness.” Of course, this is all subjective and I also do not deny that it is possible to adjust all this in Cycles, but the question is what needs to be done to do this. I have suspicions that this “softness” is caused by the fact that denoise works this way, because even when it does not leave stains, it still cleans up a lot of noise.
Lux, in turn, makes it very easy to set up a very pleasant material, immediately gives you a nice picture, realistic, as it seems to me. But for now, long enough, considering that the denoiser is worse than in the Cycles. I also like the setting of the light, it’s also soft, but it doesn’t spread everywhere, the light groups are also comfortable.
The disadvantages are the advantages of Cycles - at least for me, I am not very well versed in all the possibilities of textures and combinations of nodes.
In general, it seems to me that it is easy to make a natural picture in it and this could be completed if there were no Corona.
You can attribute the advantages of a Lux to Corona, but not fully if there is a Lux nearby. Corona allows you to customize the material as you need, but despite the fact that there are more sliders than in the Lux - Corona seems more sensitive to tuning than Lux. To make it material that will also be pleasant, I need a little more time. As for the light - it seems more rigid, but at the same time it is not limited to anything, the picture is realistic, as if it were something between lux and Cycles. Textures were drawn in those 30 minutes more clearly than in other competitors.
I can say one thing about the light and materials - they are easier to set up than in Cycles - focusing on realism, but at the same time you need to adapt yourself, because it’s like a big range in which you need to clearly get to the right place, but then you will immediately get what is needed, although the toolkit itself is modest.
And also the speed, so far the speed displaces the rest very much. You can say that in Cycles can not put a lot of samples. But when a client wants a clean picture, you will not tell him that that’s enough and so much.
The downsides to me are the same flexibility, which is also limited by the fact that there is no full-fledged adaptation, as well as difficulties with the same procedural steps.
In short, when I make orders that often do not require artistic rendering, speed and convenience prevail, but at the same time we are striving for realism. I am familiar with Lux recently and only open it for myself. I know Corona longer
I myself have been doing 3d more than a year.