Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Image Box Studios on 2016-06-19, 09:36:33

Title: Exterior lighting with fog
Post by: Image Box Studios on 2016-06-19, 09:36:33
Dear Corona members,

I am trying to do exterior lighting with fog effect like attached image. Can anyone help me out to explain same lighting and fog effect techniques? I will be very thankful.

Thanks in advance.

(https://s32.postimg.org/xioyud7bp/e908c30db366b4c5f85d4b7c229ebf65.jpg)
Title: Re: Exterior lighting with fog
Post by: FrostKiwi on 2016-06-19, 10:49:39
Nothing fancy really.
Follow YouTube tutorial from below to setup the fog and use an overcast HDRi to light it. Don't use direct light sources or sharp HDRi highlights, if you want to have something that looks like the image you provided, since it has ultra soft shadows. The Corona Volume will further diffuse any sharp shadows, but still, overcast HDRi is preffered.
You will be forced to use fully bounced fog to create the natural look, so prepare for some painful performance hit.

In a pinch you may fake fog using a a zdepth pass.
Fog won't make a scene's quality magically go up, so how natural it looks depends on how well the scene is setup in the first place.

Title: Re: Exterior lighting with fog
Post by: Image Box Studios on 2016-06-23, 18:17:27
Nothing fancy really.
Follow YouTube tutorial from below to setup the fog and use an overcast HDRi to light it. Don't use direct light sources or sharp HDRi highlights, if you want to have something that looks like the image you provided, since it has ultra soft shadows. The Corona Volume will further diffuse any sharp shadows, but still, overcast HDRi is preffered.
You will be forced to use fully bounced fog to create the natural look, so prepare for some painful performance hit.

In a pinch you may fake fog using a a zdepth pass.
Fog won't make a scene's quality magically go up, so how natural it looks depends on how well the scene is setup in the first place.


@SairesArt - Thank you very much for the information and suggestions.
Title: Re: Exterior lighting with fog
Post by: maru on 2016-06-23, 19:00:09
You can also use native 3ds Max enviro effects for this if you don't need all that fancy volumetric effects, just the fog. :)
Title: Re: Exterior lighting with fog
Post by: Juraj on 2016-06-23, 21:12:29
You can also use native 3ds Max enviro effects for this if you don't need all that fancy volumetric effects, just the fog. :)

Those really work in Corona :- D ? What's the catch ?
Title: Re: Exterior lighting with fog
Post by: Ondra on 2016-06-24, 13:48:41
You can also use native 3ds Max enviro effects for this if you don't need all that fancy volumetric effects, just the fog. :)

Those really work in Corona :- D ? What's the catch ?
unsupported in interactive, otherwise it pretty much just works ;)
Title: Re: Exterior lighting with fog
Post by: maru on 2016-06-24, 14:36:59
You can also use native 3ds Max enviro effects for this if you don't need all that fancy volumetric effects, just the fog. :)

Those really work in Corona :- D ? What's the catch ?
unsupported in interactive, otherwise it pretty much just works ;)

Sometimes you just need to move the camera or hit F9 to update all the settings, but agreed, not fully supported in IR.
Title: Re: Exterior lighting with fog
Post by: Image Box Studios on 2016-06-25, 09:37:03
You can also use native 3ds Max enviro effects for this if you don't need all that fancy volumetric effects, just the fog. :)

Oh wow great. i don't know about it. Thanks Maru.