Dear friends. It will be long read on bad english...
Everything IMHO.
I have a lot of conversation with 3D users which begin from "sorry for stupid question". By the way I have a lot of stupid questions by myself.
The best answer to question "Why Corona and not VRay?" was "Because Corona is much more simpler. Just pick render button".
But it was before... Let's remember that your main client is not 3d Guru, but 20 years old boy with 5 month of experience, which works in arch. office and must to give quick result.
Let's remember that the best vray version was 1.09. It was simple, fast engine which gave great "milky" renders. Now vray much more programmers geek and not user friendly program.
I tried to understand your RGB - sRGB connections (picker, CoronaMix texture, CoronaColor, etc.). We need a really solid base to understand this.
I sure 90% of users don't understand which color space to use and why, and when.... And more... 80% of users don't know about existence of different color spaces. Just pick color in photoshop and go on..
I understand that this is only way to get right color in max, but most of users didn't know about this problem. And you don't explain it
I think it's a time to give to community a simple user guide in terms of brighter-darker (even not reflectivity, glossiness, LUT and so on). Something like "for getting same color as in photoshop pick color in photoshop - check sRGB button - put numbers into" and so on. For users it's not interesting why, it's interesting what to do...
All of you speak same Corona language. But we are not. To begin to google the answers is a good reason for suicide. Everyone names same things in his own way. A lot of charts, a lot of physics...
Damn, I don't need to know why I need to separate color channels in output for metals. Just tell me how to separate and I'll do it.
My feature request - to make things simpler. As Corona Converter. Even simpler. I think the best way is to take a girl with pink bows to write this user guide. Only thing- she must not to be a programmer, or 3d artist or so on.. And with pictures of pink pony in different light conditions. ;)
PS. You have a lot of blending modes (there is not Color :( blending mode) in ColorMix Material. You have more modes then Photoshop has. Why? Because you can. Did you check if somebody somewhere sometimes used vivid light or pin light?
PPS. I'm in 3D business 22 years (from second version of 3D Studio for DOS). I made about 8000 arch. projects. Do you know that 90% of clients sure that glass in building must be blue and don't interesting in IOR, fresnel etc.?
PPPS. I want to back to the times with pony pictures in this forum.
Sorry for longread...
Personally Corona is one of the simplest render engines out there. Out of the box, just hit render and you can go with it.
As for some more technical functions inside the engine, these are elements which a PRO 3D artist should have learned in the past and should know already! This is your profession and job and as all the jobs and professions around the globe, if you want to be called a PRO then study and learn all the tricks & tips and physically based workflows. Learn to use the types of maps and their combinations, light setups, color rules, photography, ecc. This is why you would like to call yourself a PRO and ask to your clients a good amount of money for what you're able to produce. Cause if you manage to work with all the above, then you'll make the difference...
If not, just set up your scene as you know and hit render.
Corona is a perfect combination of simple setup or who wants a PRO setup and all the technical things we're talking in this forum I think are not only Corona related but can be applied to all the rendering engines in general. So Corona must not get simpler than it is, cause if it does, I personally won't use it...
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