difference between beauty and lightmix

[polxx]

Hi

I attach the screens.
First of all why are the light between beauty and lighmix is different (notice the shadow under the bed).
Second why the lightmix has a lot of brigth noise and beauty doesn's.
Three (connected to one) why is the light direction (shadows) seems different in beauty and lightmix.

There's also standard corona sun&sky in the scene.

Thanks, I'll upload anything more if needed

[Aram Avetisyan]

Hi,

Lightmix has different light/shadow because Lightmix has modified light values. If you reset lightmix values and colors (all white and all to 1.0) you should have identical to beauty render.

The noise is coming from the lights/render itself - each lightmix light layer has it own noise, which if intesified (e.g. you have a lamp wiszaca with 100 or 400 intensity) makes the noise more visible.
You can try increasing the denoise value and the noise (overall, for every element) will be less. And generally I would not advise increasing light intensities too much in lightmix (e.g. maximum to 10).

Hope this helps.

[TomG]

Do make sure Denoising is on for each LightSelect :) Also do note that if a bright light shining on an area is turned off in LightMix, that might sometimes lead to noise being seen in the area that light used to shine on. This is because Corona gives processing priority to the brighter, more important light in that area, and less processing to the other lights in that area - and you will see that they were given less processing when you turn that bright light off. For this reason it's often best to keep lights similar intensity and white in the scene / Beauty, if you plan on making large changes in LightMix, as this will keep all lights at similar importance (similar brightness), and give the most flexibility in adjusting colors (keeping them white). Does mean the Beauty will look very strange indeed, but gives more flexibility in the LightMix phase.