How to setup background

[Crayox13]

Hi,
how would you approach this. I have an exterior scene with camera in the underpass that is open on one side. It's pretty dark in there and very bright outside. I use vraysky map in a dome light that is connected to vray sun and dome is set to invisible. When Vantage loads the scene it automatically figures out what is what so I can switch the sky to have clouds etc. The problem is that I use multiplier of 4.0 for the sky to get brighter shadows but that makes the sky itself completely burned. Any way I can use separate setting for visible brightness of the sky and its effect on the objects? When I set the dome to like 0.1 it's beautiful but everything else is almost black. Only sunlight areas are shown, and the shadows are pretty much black.
Thanks!

[Alexander.Atanasov]

Hi Crayox13,

I would suggest to increase the GI bounces (max 4) in the Render tab and ply around with the Highlight burn or with the Filmic tonemap in the Post tab. Also please share a screenshot or the scene to test it on our end. You can upload it to wetransfer / gdrive / dropbox / mega or any other free cloud storage platform that has link sharing.

Best regards,
Alexander

[Crayox13]

Will upload screens and try increasing bounces. Dynamics is too extreme even for Filmic or highlights in exposure tab. Would be so much easier if I can just control them separately.

[Crayox13]

It looks like this by default (sky mult 4.0) and then the max filmic tone mapping highlight compression.

[Luma3d]

What if you switch out the lighting mode to Texture and us a hdr image instead...Another thing would be to lower the vraysky intensity since it's typically blown out.

[Crayox13]

I plan to use animated clouds and much easier to match everything if I just use vray sky. The problem with lowering vray sky intensity is that it'll lower the light amount too which is what I'm trying to avoid. Still not sure how this system works since it automatically set it up. My vraydome with sky was set to invisible but it recognized it as environment and put it under environment. Will try two domes if that can work.

[Crayox13]

Tried to have two domes with the instanced sky map in them but it seems Vantage just ignores one. I have the main one under environment, and the second one is not under lights. That would be so perfect. I could have animated clouds, etc. There must be some other way to have both.

[vladimir.nedev]

Tried to have two domes with the instanced sky map in them but it seems Vantage just ignores one. I have the main one under environment, and the second one is not under lights. That would be so perfect. I could have animated clouds, etc. There must be some other way to have both.

Multiple dome lights are not supported by Vantage.
You will get some warnings in the log about it.

For your case, we can add a "background multiplier", when background is set to "same as environment", so you could lower the brightness of the sky.
However, I guess this has to also affect the sky visible through refractions and maybe mirror reflections ?

We also need to discuss it internally if such an option is generally a good idea.

Greetings,
Vladimir Nedev

[Crayox13]

Yeah that would be so useful!! Maybe reflections/refractions too.