If 3ds max and corona are not color accurate do you not touch the tone mapping and LUTs in the frame buffer?
3dsMax/Corona are not
color managed :- ). It's bit of difference. They ignore system color profiles, and don't offer loading custom ones (Vray framebuffer does, so Vray is color-managed when set up correctly with custom ICC loaded).
But if your monitor is close to 100perc sRGB color gamut, either because that is maximum your monitor is capable of displaying, or you manually clamp it like that through hardware factory profile, or custom hardware profile, and you set your system profile in Windows to be sRGB (so zero software calibration), than in that scenario, Corona&3dsMax will display correct colors.
That is how I use it. This way you are stuck with sRGB color gamut only, but that's what you're gonna upload to internet anyway where 95perc. of work ends up being. sRGB also satisfactory for home inkjet printing.
You can still do separate post-production or just proofing under wider-gamut for high-end printing (which maps closer to AdobeRGB). That requires profile switching on hardware level so it introduces a space for error.
The above solution is the best until at least Corona introduces color managment like Vray has. I don't think we can wait for Autodesk...
